2024-03-28T23:23:51Z
https://pub.uni-bielefeld.de/oai
oai:pub.uni-bielefeld.de:1592161
2022-04-13T13:47:23Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Single-shot timing measurement of extreme-ultraviolet free-electron laser pulses
Maltezopoulos, Theophilos
Cunovic, Stefan
Wieland, Marek
Beye, Martin
Azima, Armin
Redlin, Harald
Krikunova, Maria
Kalms, Roland
Frühling, Ulrike
Budzyn, Filip
Wurth, Wilfried
Föhlisch, Alexander
Drescher, Markus
ddc:530
Maltezopoulos T, Cunovic S, Wieland M, et al. Single-shot timing measurement of extreme-ultraviolet free-electron laser pulses. <em>New Journal of Physics</em>. 2008;10: 033026.
Arrival time fluctuations of extreme-ultraviolet (EUV) pulses from the free-electron laser in Hamburg (FLASH) are measured single-pulse resolved at the experimental end-station. To this end, they are non-collinearly superimposed in space and time with visible femtosecond laser pulses on a GaAs substrate. The EUV irradiation induces changes of the reflectivity for the visible pulse. The temporal delay between the two light pulses is directly encoded in the spatial position of the reflectivity change which is captured with a CCD camera. For each single shot, the relative EUV/visible arrival-time can be measured with about 40 fs rms accuracy. The method constitutes a novel route for an improvement of future pump-probe experiments at short-wavelength free-electron lasers (FELs) by a pulse-wise correction with simultaneously measured arrival times of individual EUV pulses.
IOP Publ.
2008
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-15921615
https://pub.uni-bielefeld.de/record/1592161
https://pub.uni-bielefeld.de/download/1592161/2962396
eng
info:eu-repo/semantics/altIdentifier/doi/10.1088/1367-2630/10/3/033026
info:eu-repo/semantics/altIdentifier/issn/1367-2630
info:eu-repo/semantics/altIdentifier/wos/000254099000004
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1592452
2022-04-13T13:51:15Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Ion-charge-state chronoscopy of cascaded atomic Auger decay
Uphues, Thorsten
Schultze, M.
Kling, M. F.
Uiberacker, M.
Hendel, Stefan
Heinzmann, Ulrich
Kabachnik, Nikolay M.
Drescher, Markus
ddc:530
Uphues T, Schultze M, Kling MF, et al. Ion-charge-state chronoscopy of cascaded atomic Auger decay. <em>New Journal of Physics</em>. 2008;10(2): 025009.
It has recently been demonstrated that apart from the electron detection realized in the attosecond streak camera, also ion detection can be used for establishing extreme-ultraviolet pump) visible probe experiments, temporally resolving the dynamics of atomic inner-shell relaxation processes. We utilize this method for studying the Auger decay of krypton atoms following the creation of vacancy states in the 3d shell. It is shown that the electronic relaxation occurs through different pathways, each involving cascades of sequential steps which are followed in their native temporal succession.
IOP Publ.
2008
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-15924525
https://pub.uni-bielefeld.de/record/1592452
https://pub.uni-bielefeld.de/download/1592452/2962397
eng
info:eu-repo/semantics/altIdentifier/doi/10.1088/1367-2630/10/2/025009
info:eu-repo/semantics/altIdentifier/issn/1367-2630
info:eu-repo/semantics/altIdentifier/wos/000253713700005
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1599913
2018-07-24T12:57:57Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Application of multiline two-photon microscopy to functional in vivo imaging
Kurtz, Rafael
Fricke, M
Kalb, J
Tinnefeld, P
Sauer, Markus
visual system
beamsplitter
temporal resolution
calcium imaging
two-photon
microscopy
invertebrate
ddc:530
Kurtz R, Fricke M, Kalb J, Tinnefeld P, Sauer M. Application of multiline two-photon microscopy to functional in vivo imaging. <em>Journal of Neuroscience Methods</em>. 2006;151(2):276-286.
ELSEVIER SCIENCE BV
2006
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-15999137
https://pub.uni-bielefeld.de/record/1599913
https://pub.uni-bielefeld.de/download/1599913/2311117
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jneumeth.2005.12.003
info:eu-repo/semantics/altIdentifier/issn/0165-0270
info:eu-repo/semantics/altIdentifier/wos/000236257600023
info:eu-repo/semantics/altIdentifier/pmid/16442636
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1605044
2022-03-07T18:27:12Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Description of atomic friction as forced Brownian motion
Reimann, Peter
Evstigneev, Mykhaylo ; https://orcid.org/0000-0002-7056-2573
ddc:530
Reimann P, Evstigneev M. Description of atomic friction as forced Brownian motion. <em>New Journal of Physics</em>. 2005;7:25.
A theoretical description of friction force microscopy experiments in terms of a forced Brownian motion model is derived on the basis of microscopic considerations. Particular emphasis is put on the discussion of the relevant state variables/collective coordinates and on a realistic description of dissipation and inertia effects by means of comparison with experimental findings. The main new prediction of the model is a non-monotonic dependence of the friction force upon the pulling velocity of the AFM-tip relative to an atomically flat surface. The region around the force maximum can be approximately described by a universal scaling law and should be observable under experimentally realistic conditions.
IOP PUBLISHING LTD
2005
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-16050446
https://pub.uni-bielefeld.de/record/1605044
https://pub.uni-bielefeld.de/download/1605044/2961663
eng
info:eu-repo/semantics/altIdentifier/doi/10.1088/1367-2630/7/1/025
info:eu-repo/semantics/altIdentifier/issn/1367-2630
info:eu-repo/semantics/altIdentifier/wos/000226678500012
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1606637
2018-07-24T12:59:43Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Theoretical analysis of dynamic force spectroscopy experiments on ligand-receptor complexes
Raible, M
Evstigneev, Mykhaylo ; https://orcid.org/0000-0002-7056-2573
Reimann, Peter
Bartels, FW
Ros, R
chemical reaction kinetics
single molecule force spectroscopy
ddc:530
Raible M, Evstigneev M, Reimann P, Bartels FW, Ros R. Theoretical analysis of dynamic force spectroscopy experiments on ligand-receptor complexes. <em>Journal of Biotechnology</em>. 2004;112(1-2):13-23.
The forced rupture of single chemical bonds in biomolecular compounds (e.g. ligand-receptor systems) as observed in dynamic force spectroscopy experiments is addressed. Under the assumption that the probability of bond rupture depends only on the instantaneously acting force, a data collapse onto a single master curve is predicted. For rupture data obtained experimentally by dynamic AFM force spectroscopy of a ligand-receptor bond between a DNA and a regulatory protein we do not find such a collapse. We conclude that the above mentioned, generally accepted assumption is not satisfied and we discuss possible explanations. (C) 2004 Elsevier B.V. All rights reserved.
ELSEVIER SCIENCE BV
2004
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-16066371
https://pub.uni-bielefeld.de/record/1606637
https://pub.uni-bielefeld.de/download/1606637/2311126
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.biotec.2004.04.017
info:eu-repo/semantics/altIdentifier/issn/0168-1656
info:eu-repo/semantics/altIdentifier/wos/000223578600003
info:eu-repo/semantics/altIdentifier/pmid/15288937
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1602817
2018-07-24T12:57:59Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Brownian motion - Absolute negative particle mobility
Ros, Alexandra
Eichhorn, Ralf
Regtmeier, Jan
Duong, T. T.
Reimann, Peter
Anselmetti, Dario ; https://orcid.org/0000-0002-8720-4369
ddc:530
Ros A, Eichhorn R, Regtmeier J, Duong TT, Reimann P, Anselmetti D. Brownian motion - Absolute negative particle mobility. <em>Nature</em>. 2005;436(7053):928.
NATURE PUBLISHING GROUP
2005
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-16028171
https://pub.uni-bielefeld.de/record/1602817
https://pub.uni-bielefeld.de/download/1602817/2311121
eng
info:eu-repo/semantics/altIdentifier/doi/10.1038/436928a
info:eu-repo/semantics/altIdentifier/issn/0028-0836
info:eu-repo/semantics/altIdentifier/issn/1476-4679
info:eu-repo/semantics/altIdentifier/wos/000231263900031
info:eu-repo/semantics/altIdentifier/pmid/16107829
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775147
2018-07-24T12:58:27Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Percolation threshold and mean grain size in AlxSi1-x thin films
Reiss, Günter ; https://orcid.org/0000-0002-0918-5940
Vancea, Johann
Hoffmann, Horst
ddc:530
Reiss G, Vancea J, Hoffmann H. Percolation threshold and mean grain size in AlxSi1-x thin films. <em>Journal of Physics, C: Solid State Physics</em>. 1985;18(21):L657-L660.
We determined the critical composition xc of the percolation threshold in polycrystalline AIxSi1-x thin films with a new method, using structural arguments only. The result xc = (0.55 + - 0.05) agrees with the results of the commonly used methods. Moreover, our model explains the wide spread of experimental values of xc as reported in the literature.
IOP Publishing
1985
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17751475
https://pub.uni-bielefeld.de/record/1775147
https://pub.uni-bielefeld.de/download/1775147/2311811
eng
info:eu-repo/semantics/altIdentifier/doi/10.1088/0022-3719/18/21/006
info:eu-repo/semantics/altIdentifier/issn/0022-3719
info:eu-repo/semantics/altIdentifier/wos/A1985ANF7600006
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775158
2018-07-24T12:59:00Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Grain boundary resistance in polycrystalline metals
Reiss, Günter ; https://orcid.org/0000-0002-0918-5940
Vancea, Johann
Hoffmann, Horst
ddc:530
Reiss G, Vancea J, Hoffmann H. Grain boundary resistance in polycrystalline metals. <em>Physical review letters</em>. 1986;56(19):2100-2103.
Grain boundaries are known to reduce significantly the electrical dc conductivity of polycrystalline metallic materials. In this paper, we give a quantum mechanical calculation of the grain-boundary resistance based on the transfer-matrix approach. The results show an exponential decrease of the conductivity with respect to the number of grain boundaries per mean free path in accord with an empirical model proposed recently.
American Physical Society (APS)
1986
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17751589
https://pub.uni-bielefeld.de/record/1775158
https://pub.uni-bielefeld.de/download/1775158/2311819
eng
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevLett.56.2100
info:eu-repo/semantics/altIdentifier/issn/0031-9007
info:eu-repo/semantics/altIdentifier/wos/A1986C223600028
info:eu-repo/semantics/altIdentifier/pmid/10032857
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775185
2018-07-24T12:58:27Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Comment on "Reinterpretation of the thickness-dependent conductivity of thin platinum films"
Vancea, Johann
Reiss, Günter ; https://orcid.org/0000-0002-0918-5940
Hoffmann, Horst
ddc:530
Vancea J, Reiss G, Hoffmann H. Comment on "Reinterpretation of the thickness-dependent conductivity of thin platinum films". <em>Journal of Materials Science Letters</em>. 1987;6(8):985-986.
Springer Science and Business Media LLC
1987
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17751854
https://pub.uni-bielefeld.de/record/1775185
https://pub.uni-bielefeld.de/download/1775185/2311839
eng
info:eu-repo/semantics/altIdentifier/doi/10.1007/BF01729892
info:eu-repo/semantics/altIdentifier/issn/0261-8028
info:eu-repo/semantics/altIdentifier/issn/1573-4811
info:eu-repo/semantics/altIdentifier/wos/A1987J676800041
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775189
2018-07-24T12:59:00Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Electrical conduction in low-resistivity (quasiamorphous) Ag1-xCux alloys
Vancea, Johann
Pukowietz, S.
Reiss, Günter ; https://orcid.org/0000-0002-0918-5940
Hoffmann, Horst
ddc:530
Vancea J, Pukowietz S, Reiss G, Hoffmann H. Electrical conduction in low-resistivity (quasiamorphous) Ag1-xCux alloys. <em>Physical Review , B</em>. 1987;35(17):9067-9072.
UHV-evaporated Ag1-xCux alloy films show a strong dependence of the crystallite sizes on the composition: In the middle of the concentration range, the mean grain size is smaller than 2 nm. The resistivity, however, is much lower than expected for such extremely-fine-grained materials (p < 9 my Omega cm). The electrical transport parameters for these films were obtained from the thickness dependence of the conductivity without any a priori assumptions. It will be shown that the electrical transport in these alloys can be well understood as a limit of the reflection model for the electrical conductivity in polycrystalline metals [G. Reiss, J. Vancea, and H. Hoffmann, Phys. Rev. Lett. 56, 2100 (1986)].
American Physical Society (APS)
1987
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17751892
https://pub.uni-bielefeld.de/record/1775189
https://pub.uni-bielefeld.de/download/1775189/2311840
eng
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.35.9067
info:eu-repo/semantics/altIdentifier/issn/0163-1829
info:eu-repo/semantics/altIdentifier/wos/A1987H996900015
info:eu-repo/semantics/altIdentifier/pmid/9941301
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775200
2018-07-24T12:58:27Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Resistivity and the Hall effect in polycrystalline Ni-Cu and Ta-Cu multi-layered thin films
Reiss, Günter ; https://orcid.org/0000-0002-0918-5940
Vancea, Johann
Kapfberger, Klaus
Meier, G.
Hoffmann, Horst
ddc:530
Reiss G, Vancea J, Kapfberger K, Meier G, Hoffmann H. Resistivity and the Hall effect in polycrystalline Ni-Cu and Ta-Cu multi-layered thin films. <em>Journal of Physics, Condensed Matter</em>. 1989;1(7):1275-1283.
In the present paper the dependences of the resistivity p and the Hall voltage UH of polycrystalline Ni-Cu and Ta-Cu multi-layered thin films on the layer thickness dr are discussed. The thickness dependence of p and UH can be well understood using a simple model in which the layers are considered as parallel resistors, whereby the resistivity of a single layer is enhanced via surface scattering described by the well known Fuchs-Namba size theory. The Hall coefficients are independent of the layer thickness, although the measured Hall voltage varies with dr owing to the enhancement of the individual layer resistivities. For very thin layers, i.e. if the layer thickness becomes smaller than the layer roughness, the experimental data on both p and UH indicate a breakdown of the multi-layered structure to an island-like clustered film structure. For Ni-Cu a crossover from ferroparamagnetic to superparamagnetic behaviour was observed at this critical thickness.
IOP Publishing
1989
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17752004
https://pub.uni-bielefeld.de/record/1775200
https://pub.uni-bielefeld.de/download/1775200/2311846
eng
info:eu-repo/semantics/altIdentifier/doi/10.1088/0953-8984/1/7/011
info:eu-repo/semantics/altIdentifier/issn/0953-8984
info:eu-repo/semantics/altIdentifier/issn/1361-648X
info:eu-repo/semantics/altIdentifier/wos/A1989T423200011
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775213
2018-07-24T12:59:17Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Substrate effects on the surface topography of evaporated gold films: a scanning tunnelling microscopy investigation
Vancea, Johann
Reiss, Günter ; https://orcid.org/0000-0002-0918-5940
Schneider, F.
Bauer, K.
Hoffmann, Horst
ddc:530
Vancea J, Reiss G, Schneider F, Bauer K, Hoffmann H. Substrate effects on the surface topography of evaporated gold films: a scanning tunnelling microscopy investigation. <em>Surface science</em>. 1989;218(1):108-126.
Direct observation of surface roughness on metal films is a longstanding problem in thin film characterization. In this work the high quality of scanning tunnelling microscopy (STM) was used for investigation of evaporated gold films. A scanning tunnelling microscope able to scan areas up to 0.8 × 0.8 micro m with high reproducibility is presented. The topography of 80 nm thick gold films grown under identical evaporation conditions was investigated as a function of the selected substrate material (Corning glass, silicon, NaCl, mica and highly oriented pyrolitic graphite (HOPG)). The incipient growth mechanism on the substrate is the primary reason for the surface roughness. The real space images of the surface topography correlate very well with knowledge achieved from former growth experiments given in the literature. Moreover, very flat gold surfaces on HOPG allowed the observation of atomic corrugations in air environments.
Elsevier BV
1989
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17752136
https://pub.uni-bielefeld.de/record/1775213
https://pub.uni-bielefeld.de/download/1775213/2311851
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/0039-6028(89)90622-5
info:eu-repo/semantics/altIdentifier/issn/0039-6028
info:eu-repo/semantics/altIdentifier/wos/A1989AG98300008
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775219
2018-07-24T12:59:35Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Thickness dependence of the work function in double-layer metallic films
Hornauer, Hans
Vancea, Johann
Reiss, Günter ; https://orcid.org/0000-0002-0918-5940
Hoffmann, Horst
ddc:530
Hornauer H, Vancea J, Reiss G, Hoffmann H. Thickness dependence of the work function in double-layer metallic films. <em>Zeitschrift für Physik, B: Condensed Matter</em>. 1989;77(3):399-407.
The work function of metallic thin films limited by symmetric surfaces is expected to be thickness dependent at a level of 0.1 eV and a thickness range of about 5 nm. Recent experiments, however, demonstrated that Cu films on glass or Ni substrates show a long ranging (10–20 nm) increase of the work function with increasing film thickness [1]. This effect was attributed to a violation of local charge neutrality in films with unlike surfaces. In this paper we show that the barrier height of thin film diodes like metal-insulator-metal (MIM)-, metal-semiconductor (Schottky contacts)-and metal-vacuum-metal (Kelvin capacitors) structures decreases with increasing thickness of one metal electrode. This metal electrode consists of a double layer whose single layer thicknesses are of the order of few tens of nm. The observed effect can be attributed to a decrease of the work function at the counter limiting interface not exposed to the evaporation beam. A possible explanation can be found again in the violation of the local charge neutrality in films with unlike surfaces.
Springer Science and Business Media LLC
1989
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17752199
https://pub.uni-bielefeld.de/record/1775219
https://pub.uni-bielefeld.de/download/1775219/2311852
eng
info:eu-repo/semantics/altIdentifier/doi/10.1007/BF01453789
info:eu-repo/semantics/altIdentifier/issn/0722-3277
info:eu-repo/semantics/altIdentifier/issn/1434-6036
info:eu-repo/semantics/altIdentifier/wos/A1989CD31300009
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775224
2018-07-24T12:58:27Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
STM on polycrystalline thin films
Reiss, Günter ; https://orcid.org/0000-0002-0918-5940
ddc:530
Reiss G. STM on polycrystalline thin films. <em>Vacuum</em>. 1990;41(4-6):1322-1324.
Examples for correlations of results of Scanning Tunnelling Microscopy (STM) with thickness dependent physical properties of thin films will be discussed: surface roughness enhances the thickness dependent resistivity. This effect can be described quantitatively by STM imaging. Good agreement with a simple model of the film resistivity can be found for Au and Cr-Au films. The magnetization loops of Au-Fe-Au films depend on the preparation parameters, although RHEED indicates identical flat surfaces. STM, however, often shows different local topographies. Again a direct correlation can be established.
Elsevier BV
1990
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17752248
https://pub.uni-bielefeld.de/record/1775224
https://pub.uni-bielefeld.de/download/1775224/2311853
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/0042-207X(90)93946-G
info:eu-repo/semantics/altIdentifier/issn/0042-207X
info:eu-repo/semantics/altIdentifier/wos/A1990EE54700154
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775230
2018-07-24T12:59:00Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Scanning tunneling microscopy on rough surfaces: tip-shape-limited resolution
Reiss, Günter ; https://orcid.org/0000-0002-0918-5940
Vancea, Johann
Wittmann, H.
Zweck, Josef
Hoffmann, Horst
Spatial resolution
Layers
Niobium
Gold
Resolution methods
High-
Transmission electron microscopy
Tunneleffect
Roughness
Morphology
ddc:530
Reiss G, Vancea J, Wittmann H, Zweck J, Hoffmann H. Scanning tunneling microscopy on rough surfaces: tip-shape-limited resolution. <em>Journal of applied physics</em>. 1990;67(3):1156-1159.
This paper discusses the reliability of scanning tunneling microscopy (STM) images of mesoscopically rough surfaces. The specific structure of these images represents a convolution between the real surface topography and the shape of the tip. In order to interpret these images quantitatively, the line scans of steep and high steps can be used to obtain an image of the tip itself. This image shows tip radii ranging typically from 5 to 15 nm and cone angles of about 30° over a length of 80 nm, and can in turn be used to recognize the limits of STM resolution on a rough surface: High-resolution transmission electron microscopy cross-section images of Au island films on a Au-Nb double layer are convoluted with the experimentally observed tip shape; the resulting line scans correspond very well with STM graphs of the same samples. Finally an overall criterion for the resolution of the STM on such surfaces is proposed.
AIP Publishing
1990
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17752300
https://pub.uni-bielefeld.de/record/1775230
https://pub.uni-bielefeld.de/download/1775230/2311857
eng
info:eu-repo/semantics/altIdentifier/doi/10.1063/1.345712
info:eu-repo/semantics/altIdentifier/issn/0021-8979
info:eu-repo/semantics/altIdentifier/wos/A1990CL92000003
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775236
2018-07-24T12:58:27Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Scanning tunneling microscopy on rough surfaces: deconvolution of constant current images
Reiss, Günter ; https://orcid.org/0000-0002-0918-5940
Schneider, F.
Vancea, Johann
Hoffmann, Horst
Image processing
Scanning tunneling microscopy
Deconvolution
Roughness
Correlations
Transducers
Surface reconstruction
ddc:530
Reiss G, Schneider F, Vancea J, Hoffmann H. Scanning tunneling microscopy on rough surfaces: deconvolution of constant current images. <em>Applied physics letters</em>. 1990;57(9):867-869.
This letter critically discusses the topographical information obtained by scanning tunneling microscopy (STM) on surfaces with a mesoscopic roughness, i.e., in the range of some nm's. In a foregoing publication [J. Appl. Phys. 67, 1156 (1990)], we already treated the evaluation of constant current images based on the knowledge of the real surface and the shape of the tunneling tip ('tip shape limited resolution'). Now we deal with the invers problem: the reconstruction of the real surface topography based on the corresponding STM image and the tip shape, using a simple, straightforward formalism.
AIP Publishing
1990
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17752369
https://pub.uni-bielefeld.de/record/1775236
https://pub.uni-bielefeld.de/download/1775236/2311858
eng
info:eu-repo/semantics/altIdentifier/doi/10.1063/1.103390
info:eu-repo/semantics/altIdentifier/issn/0003-6951
info:eu-repo/semantics/altIdentifier/wos/A1990DV75300009
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775241
2018-07-24T12:58:03Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Thickness-dependent thin-film resistivity: application of quantitative scanning-tunneling-microscopy imaging
Reiss, Günter ; https://orcid.org/0000-0002-0918-5940
Hastreiter, E.
Brückl, Hubert
Vancea, Johann
ddc:530
Reiss G, Hastreiter E, Brückl H, Vancea J. Thickness-dependent thin-film resistivity: application of quantitative scanning-tunneling-microscopy imaging. <em>Physical review B</em>. 1990;43(6):5176-5179.
The dependence of thin-film resistivity on the thickness is known to be strongly influenced by the interaction of the conduction electrons with the surface. Great efforts have been made in recent years, mainly concerning the quantum-mechanical description of the surface scattering. Detailed discussions of this problem, however, suffer from the lack of information concerning the real topography of thin-film surfaces. The development of scanning tunneling microscopy (STM) now gives the chance of direct, quantitative imaging. In this paper, we use the topographic information of STM to improve the fitting of theoretical descriptions to the measured thickness-dependence of the resistivity. The transport parameters obtained from these calculations show a high degree of physical consistency.
American Physical Society (APS)
1990
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17752412
https://pub.uni-bielefeld.de/record/1775241
https://pub.uni-bielefeld.de/download/1775241/2311859
eng
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.43.5176
info:eu-repo/semantics/altIdentifier/issn/0163-1829
info:eu-repo/semantics/altIdentifier/issn/1095-3795
info:eu-repo/semantics/altIdentifier/wos/A1991EY62300082
info:eu-repo/semantics/altIdentifier/pmid/9997904
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775255
2018-07-24T12:58:27Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Wavelength Dependence of the Fano Effect
Heinzmann, Ulrich
Kessler, J.
Lorenz, J.
ddc:530
Heinzmann U, Kessler J, Lorenz J. Wavelength Dependence of the Fano Effect. <em>Physical review letters</em>. 1970;25(19):1325.
The spin polarization of photoelectrons emitted by unpolarized cesium atoms exposed to circularly polarized light has been measured at wavelengths between 2300 and 3200 A. At certain wavelengths 100% polarization has been obtained. Slight deviations from theory have been observed.
American Physical Society (APS)
1970
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17752559
https://pub.uni-bielefeld.de/record/1775255
https://pub.uni-bielefeld.de/download/1775255/2311867
eng
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevLett.25.1325
info:eu-repo/semantics/altIdentifier/issn/0031-9007
info:eu-repo/semantics/altIdentifier/wos/A1970H673700003
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775259
2018-07-24T12:59:00Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Polarized Electrons by Photoemission from Solid Alkalis
Heinzmann, Ulrich
Kessler, J.
Ohnemus, B.
ddc:530
Heinzmann U, Kessler J, Ohnemus B. Polarized Electrons by Photoemission from Solid Alkalis. <em>Physical review letters</em>. 1971;27(25):1696-1697.
We have observed spin polarization of photoelectrons emitted by solid alkali targets exposed to circularly polarized light. The polarization increases monotonically with increasing atomic number.
American Physical Society (APS)
1971
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17752597
https://pub.uni-bielefeld.de/record/1775259
https://pub.uni-bielefeld.de/download/1775259/2311868
eng
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevLett.27.1696
info:eu-repo/semantics/altIdentifier/issn/0031-9007
info:eu-repo/semantics/altIdentifier/wos/A1971L074400002
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775263
2018-07-24T12:59:17Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Spin-Polarized Electrons from Autoionizing Transitions in Thallium
Heinzmann, Ulrich
Heuer, H.
Kessler, J.
ddc:530
Heinzmann U, Heuer H, Kessler J. Spin-Polarized Electrons from Autoionizing Transitions in Thallium. <em>Physical review letters</em>. 1975;34(8):441-444.
The spin polarization of photoelectrons emitted by thallium atoms exposed to circularly polarized light has been measured between 1400 and 1700 A. The polarization curve shows a pronounced structure which is determined by the autoionization resonances. The results are explained on the basis of Fano's resonance theory.
American Physical Society (APS)
1975
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17752638
https://pub.uni-bielefeld.de/record/1775263
https://pub.uni-bielefeld.de/download/1775263/2311869
eng
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevLett.34.441
info:eu-repo/semantics/altIdentifier/issn/0031-9007
info:eu-repo/semantics/altIdentifier/wos/A1975V624500001
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775267
2018-07-24T12:58:27Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Evidence for New Minima in Photoionization Cross Section Obtained by Spin-Polarization Measurements
Heinzmann, Ulrich
Heuer, H.
Kessler, J.
ddc:530
Heinzmann U, Heuer H, Kessler J. Evidence for New Minima in Photoionization Cross Section Obtained by Spin-Polarization Measurements. <em>Physical review letters</em>. 1976;36(24):1444-1447.
American Physical Society (APS)
1976
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17752670
https://pub.uni-bielefeld.de/record/1775267
https://pub.uni-bielefeld.de/download/1775267/2311870
eng
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevLett.36.1444
info:eu-repo/semantics/altIdentifier/issn/0031-9007
info:eu-repo/semantics/altIdentifier/wos/A1976BT72800011
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775271
2018-07-24T12:59:35Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Scanning tunneling microscopy on rough surfaces: quantitative image analysis
Reiss, Günter ; https://orcid.org/0000-0002-0918-5940
Brückl, Hubert
Vancea, Johann
Lecheler, R.
Hastreiter, E.
Correlation functions
Resolution methods
High-
Roughness
Thin films
Nickel polycrystals
ddc:530
Reiss G, Brückl H, Vancea J, Lecheler R, Hastreiter E. Scanning tunneling microscopy on rough surfaces: quantitative image analysis. <em>Journal of applied physics</em>. 1991;70(1):523-525.
In this communication, the application of scanning tunneling microscopy (STM) for a quantitative evaluation of roughnesses and mean island sizes of polycrystalline thin films is discussed. Provided strong conditions concerning the resolution are satisfied, the results are in good agreement with standard techniques as, for example, transmission electron microscopy. Owing to its high resolution, STM can supply a better characterization of surfaces than established methods, especially concerning the roughness. Microscopic interpretations of surface dependent physical properties thus can be considerably improved by a quantitative analysis of STM images.
AIP Publishing
1991
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17752715
https://pub.uni-bielefeld.de/record/1775271
https://pub.uni-bielefeld.de/download/1775271/2311871
eng
info:eu-repo/semantics/altIdentifier/doi/10.1063/1.350267
info:eu-repo/semantics/altIdentifier/issn/0021-8979
info:eu-repo/semantics/altIdentifier/wos/A1991FV06900088
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775277
2018-07-24T12:58:03Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Electronic transport in metallic films: a tool for scanning tunneling microscopy investigations
Reiss, Günter ; https://orcid.org/0000-0002-0918-5940
Brückl, Hubert
ddc:530
Reiss G, Brückl H. Electronic transport in metallic films: a tool for scanning tunneling microscopy investigations. <em>Superlattices and Microstructures</em>. 1992;11(2):171-174.
In this contribution, we show, that the evaluation of electronic transport parameters in confined systems can be considerably improved by additional Scanning Tunneling Microscopy (STM) imaging of the limiting surfaces. The thin films which are experimentally available usually show both a mesoscopic and a microscopic (i.e. atomic) surface roughness. These two roughnesses, however, are of well separated magnitudes and therefore can be treated either by classical averaging or by quantum mechanics. In order to ensure reliable STM results, the resolution especially of mesoscopic surface features will be discussed. Provided reasonable STM resolution, the experimental data for the resistivity can be interpreted for the first time with a realistic, two dimensional model for the current transport in thin films. Forthcoming applications concerning the distribution of the potential related to current transport in thin films will be discussed.
Elsevier BV
1992
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17752776
https://pub.uni-bielefeld.de/record/1775277
https://pub.uni-bielefeld.de/download/1775277/2311872
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/0749-6036(92)90245-Z
info:eu-repo/semantics/altIdentifier/issn/0749-6036
info:eu-repo/semantics/altIdentifier/wos/A1992HE98000009
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775280
2018-07-24T12:59:00Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
The influence of surface roughness on electronic transport in thin films
Reiss, Günter ; https://orcid.org/0000-0002-0918-5940
Brückl, Hubert
ddc:530
Reiss G, Brückl H. The influence of surface roughness on electronic transport in thin films. <em>Surface science</em>. 1992;269-270:772-776.
In thin films, the structure of the surfaces considerably influences the transport of conduction electrons. For mesoscopic roughnesses in the range of a few nm, this is due to the varying film thickness, which gives rise to a spatially fluctuating conductance. Moreover, microscopic roughnesses can contribute to the scattering of the electrons and therefore additionally enhance the thin-film resistivity. For a quantitative understanding of the transport in these systems, a detailed investigation of the surface roughness combined with measurements of the electronic properties are necessary. Here, we discuss STM imaging of various metal films and the application of these results to the interpretation of electronic thin-film properties. Provided reasonable resolution of STM in the nm range, a good correspondence of STM results with the electrical behaviour of growing metal films can be established. Furthermore, a detailed two-dimensional analysis allows for a calculation of the potential on current-carrying thin films. On the other hand, this method supplies reliable values for the electronic transport parameters.
Elsevier BV
1992
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17752800
https://pub.uni-bielefeld.de/record/1775280
https://pub.uni-bielefeld.de/download/1775280/2311873
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/0039-6028(92)91347-E
info:eu-repo/semantics/altIdentifier/issn/0039-6028
info:eu-repo/semantics/altIdentifier/wos/A1992HY64300029
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775283
2018-07-24T12:59:35Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Polarization of Photoelectrons Ejected by Unpolarized Light from Xenon Atoms
Heinzmann, Ulrich
Schönhense, G.
Kessler, J.
ddc:530
Heinzmann U, Schönhense G, Kessler J. Polarization of Photoelectrons Ejected by Unpolarized Light from Xenon Atoms. <em>Physical review letters</em>. 1979;42(24):1603-1605.
The theoretical prediction that polarized photoelectrons can be ejected from unpolarized atoms by unpolarized radiation has been experimentally verified for xenon atoms. The wavelength dependence of the polarization has been measured and compared with theoretical results at helium and neon resonance wavelengths between 74.4 and 46.1 nm.
American Physical Society (APS)
1979
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17752839
https://pub.uni-bielefeld.de/record/1775283
https://pub.uni-bielefeld.de/download/1775283/2311874
eng
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevLett.42.1603
info:eu-repo/semantics/altIdentifier/issn/0031-9007
info:eu-repo/semantics/altIdentifier/wos/A1979GY87400009
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775287
2018-07-24T12:59:17Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Photoelectron Polarization in Hg 6s-2 Subshell Ionization with Unpolarized Light: New Aspect of the Fano Effect
Schönhense, G.
Heinzmann, Ulrich
Kessler, J.
Cherepkov, N. A.
ddc:530
Schönhense G, Heinzmann U, Kessler J, Cherepkov NA. Photoelectron Polarization in Hg 6s-2 Subshell Ionization with Unpolarized Light: New Aspect of the Fano Effect. <em>Physical review letters</em>. 1982;48(9):603-606.
American Physical Society (APS)
1982
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17752871
https://pub.uni-bielefeld.de/record/1775287
https://pub.uni-bielefeld.de/download/1775287/2311875
eng
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevLett.48.603
info:eu-repo/semantics/altIdentifier/issn/0031-9007
info:eu-repo/semantics/altIdentifier/wos/A1982NF99400010
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775297
2018-07-24T12:59:00Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Angular Dependence of the Spin-Polarization Transfer from Circularly Polarized Synchrotron Radiation onto Photoelectrons from Atomic Xe 5p6
Heckenkamp, Ch.
Schäfers, F.
Schönhense, G.
Heinzmann, Ulrich
ddc:530
Heckenkamp C, Schäfers F, Schönhense G, Heinzmann U. Angular Dependence of the Spin-Polarization Transfer from Circularly Polarized Synchrotron Radiation onto Photoelectrons from Atomic Xe 5p6. <em>Physical review letters</em>. 1984;52(6):421-424.
The photoelectron emission from atomic xenon has been simultaneously resolved with respect to photon energy, photon (circular) polarization, photoelectron emission angle, electron kinetic energy, and spin-polarization components by use of synchrotron radiation of wavelengths between 48 and 90 nm from the new dedicated electron storage ring BESSY. The angular dependence of the spin polarization and the energy dependence of the dynamical spin parameters experimentally obtained show good agreement with theoretical predictions.
American Physical Society (APS)
1984
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17752971
https://pub.uni-bielefeld.de/record/1775297
https://pub.uni-bielefeld.de/download/1775297/2311877
eng
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevLett.52.421
info:eu-repo/semantics/altIdentifier/issn/0031-9007
info:eu-repo/semantics/altIdentifier/wos/A1984SB22500006
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775302
2018-07-24T12:59:17Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Characterization of Symmetry Properties of Pt(111) Electron Bands by Means of Angle-, Energy-, and Spin-Resolved Photoemission with Circularly Polarized Synchrotron Radiation
Eyers, A.
Schäfers, F.
Schönhense, G.
Heinzmann, Ulrich
Oepen, H. P.
Hünlich, K.
Kirschner, J.
Borstel, G.
ddc:530
Eyers A, Schäfers F, Schönhense G, et al. Characterization of Symmetry Properties of Pt(111) Electron Bands by Means of Angle-, Energy-, and Spin-Resolved Photoemission with Circularly Polarized Synchrotron Radiation. <em>Physical review letters</em>. 1984;52(17):1559-1562.
An angle-, energy-, and spin-resolved photoemission experiment has been performed for Pt(111) with the circularly polarized synchrotron radiation of the new German dedicated storage ring BESSY. The photoelectron polarization measured as function of the kinetic energy at different photon energies between 6.5 and 24 eV for normal incidence and normal emission shows a pronounced spectral variation up to +/-55%. The electron intensities and polarizations observed allow a symmetry-resolved band characterization of Pt in the [Gamma]-L direction.
American Physical Society (APS)
1984
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17753020
https://pub.uni-bielefeld.de/record/1775302
https://pub.uni-bielefeld.de/download/1775302/2311878
eng
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevLett.52.1559
info:eu-repo/semantics/altIdentifier/issn/0031-9007
info:eu-repo/semantics/altIdentifier/wos/A1984SM96300025
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775311
2018-07-24T12:58:03Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Highly Spin-Polarized Photoemission near Threshold from Physisorbed Xenon and Krypton Atoms
Schönhense, G.
Eyers, A.
Friess, U.
Schäfers, F.
Heinzmann, Ulrich
ddc:530
Schönhense G, Eyers A, Friess U, Schäfers F, Heinzmann U. Highly Spin-Polarized Photoemission near Threshold from Physisorbed Xenon and Krypton Atoms. <em>Physical review letters</em>. 1985;54(6):547-550.
By use of circularly polarized synchrotron radiation at BESSY, spin-polarized photoemission from the valence orbitals of Xe and Kr atoms adsorbed on the Pt(111) single-crystal surface has been studied. Under certain conditions almost complete photoelectron polarization parallel or antiparallel to the photon spin was observed, allowing a direct assignment of quantum numbers of the states involved. Highly resolved intensity and polarization spectra in the threshold region exhibit pronounced variations versus photon energy.
American Physical Society (APS)
1985
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17753110
https://pub.uni-bielefeld.de/record/1775311
https://pub.uni-bielefeld.de/download/1775311/2311879
eng
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevLett.54.547
info:eu-repo/semantics/altIdentifier/issn/0031-9007
info:eu-repo/semantics/altIdentifier/wos/A1985ABE0200016
info:eu-repo/semantics/altIdentifier/pmid/10031548
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775317
2018-07-24T12:59:00Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Experimental angular-resolved photoelectron spectroscopy of free oriented CH3I molecules
Kaesdorf, S.
Schönhense, G.
Heinzmann, Ulrich
ddc:530
Kaesdorf S, Schönhense G, Heinzmann U. Experimental angular-resolved photoelectron spectroscopy of free oriented CH3I molecules. <em>Physical review letters</em>. 1985;54(9):885-888.
A photoionization experiment on free oriented molecules in the gas phase has been performed. CH3I molecules in a supersonic beam have been oriented with respect to the molecular axis parallel to an external field by use of an electric hexapole. The photoelectrons ejected by vacuum ultraviolet radiation in a region of a very weak field from the lone-pair orbital located at the iodine atom show a pronounced asymmetry depending on whether electrons are emitted parallel or antiparallel to the molecular axis.
American Physical Society (APS)
1985
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17753179
https://pub.uni-bielefeld.de/record/1775317
https://pub.uni-bielefeld.de/download/1775317/2311880
eng
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevLett.54.885
info:eu-repo/semantics/altIdentifier/issn/0031-9007
info:eu-repo/semantics/altIdentifier/wos/A1985ADR2200009
info:eu-repo/semantics/altIdentifier/pmid/10031646
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775321
2018-07-24T12:59:17Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Sharp photon-induced np - (n+1)s resonances in Xe and Kr monolayers observed by spin-resolved electron spectroscopy
Schönhense, G.
Eyers, A.
Heinzmann, Ulrich
ddc:530
Schönhense G, Eyers A, Heinzmann U. Sharp photon-induced np - (n+1)s resonances in Xe and Kr monolayers observed by spin-resolved electron spectroscopy. <em>Physical review letters</em>. 1986;56(5):512-515.
American Physical Society (APS)
1986
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17753211
https://pub.uni-bielefeld.de/record/1775321
https://pub.uni-bielefeld.de/download/1775321/2311881
eng
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevLett.56.512
info:eu-repo/semantics/altIdentifier/issn/0031-9007
info:eu-repo/semantics/altIdentifier/wos/A1986AYM4500028
info:eu-repo/semantics/altIdentifier/pmid/10033211
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775325
2018-07-24T12:58:27Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Schönhense and Heinzmann Respond
Schönhense, G.
Heinzmann, Ulrich
ddc:530
Schönhense G, Heinzmann U. Schönhense and Heinzmann Respond. <em>Physical review letters</em>. 1986;57(2):268.
Response to a comment of C. P. Flynn to Sharp Photon-Induced np - (n+1)s Resonances in Xe and Kr Monolayers Observed by Spin-Resolved Electron Spectroscopy in Physical Review Letters 57, 267 (1986).
American Physical Society (APS)
1986
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17753255
https://pub.uni-bielefeld.de/record/1775325
https://pub.uni-bielefeld.de/download/1775325/2311882
eng
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevLett.57.268
info:eu-repo/semantics/altIdentifier/issn/0031-9007
info:eu-repo/semantics/altIdentifier/wos/A1986D125600034
info:eu-repo/semantics/altIdentifier/pmid/10033769
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775328
2018-07-24T12:58:03Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Determination of xenon valence and conduction bands by spin-polarized photoemission
Kessler, B.
Eyers, A.
Horn, K.
Müller, Norbert
Schmiedeskamp, G.
Schönhense, G.
Heinzmann, Ulrich
ddc:530
Kessler B, Eyers A, Horn K, et al. Determination of xenon valence and conduction bands by spin-polarized photoemission. <em>Physical review letters</em>. 1987;59(3):331-334.
Using circularly polarized synchrotron radiation and spin-resolved photoemission, we have studied the valence and conduction bands of Xe(111) up to about 18 eV above the valence-band maximum. Direct information about the symmetry of bands and their hybridization is provided by photoelectron spin polarization. Our data also prove the existence of a gap in the unoccupied bands above the fundamental gap. A comparison of our data with calculated band structures shows the importance of an energy-dependent self-energy correction.
American Physical Society (APS)
1987
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17753284
https://pub.uni-bielefeld.de/record/1775328
https://pub.uni-bielefeld.de/download/1775328/2311883
eng
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevLett.59.331
info:eu-repo/semantics/altIdentifier/issn/0031-9007
info:eu-repo/semantics/altIdentifier/wos/A1987J252200022
info:eu-repo/semantics/altIdentifier/pmid/10035733
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775335
2018-07-24T12:58:03Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Electronic transport properties of giant-magnetoresistance Fe/Cr multilayers
Jacob, M.
Reiss, Günter ; https://orcid.org/0000-0002-0918-5940
Brückl, Hubert
Hoffmann, Horst
ddc:530
Jacob M, Reiss G, Brückl H, Hoffmann H. Electronic transport properties of giant-magnetoresistance Fe/Cr multilayers. <em>Physical Review, B</em>. 1992;46(17):11208-11211.
Thin Fe/Cr multilayered films are the most intensively investigated system with regard to the recently discovered giant magnetoresistance (GMR). In order to contribute to the understanding of this effect, we present the results of resistance measurements during growth of Fe/Cr single-layer and multilayer films. We determined the transport parameters of these films and compared the thickness dependent conductances of ferromagnetic and antiferromagnetic coupled layers. The difference in the conductances shows complete saturation for Fe thicknesses above 3 nm and is consistent with the ex situ measured GMR of the antiferromagnetic film. This points to interface scattering as origin of the GMR. With respect to this result we investigated the influence of the interface roughness on the amount of GMR.
American Physical Society (APS)
1992
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17753352
https://pub.uni-bielefeld.de/record/1775335
https://pub.uni-bielefeld.de/download/1775335/2311884
eng
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.46.11208
info:eu-repo/semantics/altIdentifier/issn/0163-1829
info:eu-repo/semantics/altIdentifier/issn/1095-3795
info:eu-repo/semantics/altIdentifier/wos/A1992JW97600100
info:eu-repo/semantics/altIdentifier/pmid/10003001
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775345
2018-07-24T12:59:17Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Experimental verification of a new spin-polarization effect in photoemission: Polarized photoelectrons from Pt(111) with linearly polarized radiation in normal incidence and normal emission
Schmiedeskamp, B.
Vogt, B.
Heinzmann, Ulrich
ddc:530
Schmiedeskamp B, Vogt B, Heinzmann U. Experimental verification of a new spin-polarization effect in photoemission: Polarized photoelectrons from Pt(111) with linearly polarized radiation in normal incidence and normal emission. <em>Physical review letters</em>. 1988;60(7):651-654.
A theoretical prediction of a new spin effect by Tamura, Piepke, and Feder has been experimentally verified: Photoelectrons can be polarized even if the photoemission is performed with linearly polarized radiation and even if it is studied in the highly symmetrical setup of normal incidence and normal emission. Radiation with energies between 21 and 22.4 eV ejects photoelectrons from Pt(111) polarized with a degree between 10% and 40%. The spin direction coincides with a plane parallel to the surface and changes its sign when the crystal is rotated by 60° about the surface normal.
American Physical Society (APS)
1988
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17753459
https://pub.uni-bielefeld.de/record/1775345
https://pub.uni-bielefeld.de/download/1775345/2311887
eng
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevLett.60.651
info:eu-repo/semantics/altIdentifier/issn/0031-9007
info:eu-repo/semantics/altIdentifier/wos/A1988M021900027
info:eu-repo/semantics/altIdentifier/pmid/10038607
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775349
2018-07-24T12:58:27Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Rotationally resolved Fano effect of HI molecules: An experimental study using coherent vacuum-ultraviolet radiation
Huth-Fehre, T.
Mank, A.
Drescher, Markus
Böwering, N.
Heinzmann, Ulrich
ddc:530
Huth-Fehre T, Mank A, Drescher M, Böwering N, Heinzmann U. Rotationally resolved Fano effect of HI molecules: An experimental study using coherent vacuum-ultraviolet radiation. <em>Physical review letters</em>. 1990;64(4):396-399.
American Physical Society (APS)
1990
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17753496
https://pub.uni-bielefeld.de/record/1775349
https://pub.uni-bielefeld.de/download/1775349/2311888
eng
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevLett.64.396
info:eu-repo/semantics/altIdentifier/issn/0031-9007
info:eu-repo/semantics/altIdentifier/wos/A1990CJ68600018
info:eu-repo/semantics/altIdentifier/pmid/10041969
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775354
2018-07-24T12:58:03Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Au-induced surface state on Pt(111) revealed by spin-resolved photoemission with linearly polarized light
Stoppmanns, P.
Heidemann, B.
Irmer, N.
Müller, Norbert
Vogt, B.
Schmiedeskamp, B.
Heinzmann, Ulrich
Tamura, E.
Feder, Roland
ddc:530
Stoppmanns P, Heidemann B, Irmer N, et al. Au-induced surface state on Pt(111) revealed by spin-resolved photoemission with linearly polarized light. <em>Physical Review Letters</em>. 1991;66(20):2645-2648.
Photoelectrons ejected by normally incident linearly polarized He i radiation and emitted normal to epitaxial Au layers on Pt(111) are strongly spin polarized for both emission from the Pt substrate and the Au adsorbate up to 2.2 layers coverage. Relativistic Green’s-function calculations reproduce the measured data and reveal the physical origin of the polarization for a monolayer Au coverage to be a Au-induced surface state. The spin polarization is significantly influenced by the underlying Pt bulk and is thus a sensitive measure of the Au adsorption site.
American Physical Society (APS)
1991
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17753541
https://pub.uni-bielefeld.de/record/1775354
https://pub.uni-bielefeld.de/download/1775354/2311889
eng
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevLett.66.2645
info:eu-repo/semantics/altIdentifier/issn/0031-9007
info:eu-repo/semantics/altIdentifier/wos/A1991FM03600026
info:eu-repo/semantics/altIdentifier/pmid/10043575
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775363
2018-07-24T12:58:27Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Spin-resolved photoemission from Xe on Pd(111) in the dilute phase: The model case of singly adsorbed atoms
Vogt, B.
Kessler, B.
Müller, Norbert
Schönhense, G.
Schmiedeskamp, B.
Heinzmann, Ulrich
ddc:530
Vogt B, Kessler B, Müller N, Schönhense G, Schmiedeskamp B, Heinzmann U. Spin-resolved photoemission from Xe on Pd(111) in the dilute phase: The model case of singly adsorbed atoms. <em>Physical Review Letters</em>. 1991;67(10):1318-1321.
American Physical Society (APS)
1991
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17753639
https://pub.uni-bielefeld.de/record/1775363
https://pub.uni-bielefeld.de/download/1775363/2311890
eng
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevLett.67.1318
info:eu-repo/semantics/altIdentifier/issn/0031-9007
info:eu-repo/semantics/altIdentifier/wos/A1991GC95700036
info:eu-repo/semantics/altIdentifier/pmid/10044115
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775369
2018-07-24T12:59:17Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Scanning tunneling potentiometry (STP) studies of gold islands on a thin carbon film
Besold, J.
Reiss, Günter ; https://orcid.org/0000-0002-0918-5940
Hoffmann, Horst
ddc:530
Besold J, Reiss G, Hoffmann H. Scanning tunneling potentiometry (STP) studies of gold islands on a thin carbon film. <em>Applied surface science</em>. 1993;65-66:23-27.
The technique of scanning tunneling microscopy (STM) has been used to study the spatial variation of the electric potential on thin film surfaces. Topography and potential distribution of the film surface are measured simultaneously. A lateral voltage gradient is obtained by applying a DC voltage bias to a metal film. With our experimental arrangement potential differences of a few my V can be distinguished. On the lateral scale, potential drops of about 500 my V can be localized within a distance of 2 nm. On uncovered parts of the high resistive carbon film a homogeneous drop of the potential can be measured. In the vicinity of the gold islands on the carbon surface this smooth distribution is heavily disturbed. Due to their large conductance, the islands correlate well with plateaus of the measured potential. In order to identify gold and carbon on the surface, additional spectroscopic STM-measurements have been performed.
Elsevier BV
1993
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17753690
https://pub.uni-bielefeld.de/record/1775369
https://pub.uni-bielefeld.de/download/1775369/2311891
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/0169-4332(93)90629-P
info:eu-repo/semantics/altIdentifier/issn/0169-4332
info:eu-repo/semantics/altIdentifier/wos/A1993KW45800005
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775373
2018-07-24T12:58:03Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Spin-resolved Auger electron spectroscopy of barium atoms
Kuntze, R.
Salzmann, M.
Böwering, N.
Heinzmann, Ulrich
ddc:530
Kuntze R, Salzmann M, Böwering N, Heinzmann U. Spin-resolved Auger electron spectroscopy of barium atoms. <em>Physical review letters</em>. 1993;70(24):3716-3719.
The angular dependence of the spin polarization of Auger electrons was measured after 5p photoionization of free Ba atoms with circularly polarized light. A substantial polarization transfer from the oriented photoion onto the Auger electrons was observed in confirmation of theoretical predictions by Kabachnik and Lee. The ratio of the dipole transition matrix elements and the orientation and alignment coefficients were extracted from the experimental data for the Auger electron polarization parameters.
American Physical Society (APS)
1993
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17753739
https://pub.uni-bielefeld.de/record/1775373
https://pub.uni-bielefeld.de/download/1775373/2311892
eng
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevLett.70.3716
info:eu-repo/semantics/altIdentifier/issn/0031-9007
info:eu-repo/semantics/altIdentifier/wos/A1993LF94200011
info:eu-repo/semantics/altIdentifier/pmid/10053944
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775384
2018-07-24T12:59:35Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
An apparatus for the production of circularly polarised VUV radiation
Heinzmann, Ulrich
ddc:530
Heinzmann U. An apparatus for the production of circularly polarised VUV radiation. <em>Journal of Physics E: Scientific Instruments</em>. 1977;10(10):1001-1005.
An apparatus for the production of circularly polarised vacuum ultraviolet (VUV) radiation up to 9 eV is described. A photon beam of high intensity and polarisation is used for the photoionisation of atomic and molecular vapour beams in order to obtain spin-polarised photoelectrons. The radiation source and the polariser are discussed in detail. Results of intensity and polarisation measurements are presented.
IOP Publishing
1977
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17753846
https://pub.uni-bielefeld.de/record/1775384
https://pub.uni-bielefeld.de/download/1775384/2311895
eng
info:eu-repo/semantics/altIdentifier/doi/10.1088/0022-3735/10/10/016
info:eu-repo/semantics/altIdentifier/issn/0022-3735
info:eu-repo/semantics/altIdentifier/wos/A1977ED93100016
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775386
2018-07-24T12:59:00Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Ultrahigh vacuum scanning-tunneling microscope for in situ studies of annealing and electromigration behavior of thin films
Reiss, Günter ; https://orcid.org/0000-0002-0918-5940
Levine, L. E.
Smith, D. A.
Electrophoresis
Ultrahigh vacuum
Scanning tunneling microscopy
Silver scanning
Images
Thin films
Annealing
Surface structure
ddc:530
Reiss G, Levine LE, Smith DA. Ultrahigh vacuum scanning-tunneling microscope for in situ studies of annealing and electromigration behavior of thin films. <em>Journal of Vacuum Science and Technology, B: Microelectronics and Nanometer Structures</em>. 1993;11(1):108-111.
High resolution in situ imaging of metal surfaces during annealing and/or current transport is of great interest both for the application of metal lines in electronic devices and for extending our basic knowledge of the related complex physical phenomena. Due to its high resolution, the scanning tunneling microscope (STM) is a promising tool for in situ investigations of the structural changes of metals with respect to temperature (annealing) and current transport (electromigration). In this article, the instrumental modifications necessary for in situ scanning tunneling microscopy of heated and/or current carrying thin films under ultrahigh vacuum conditions are discussed. Using results obtained on Ag films, the ability of our STM to image the surface dynamically is demonstrated, while structural changes induced by the current transport are taking place.
American Vacuum Society
1993
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17753865
https://pub.uni-bielefeld.de/record/1775386
https://pub.uni-bielefeld.de/download/1775386/2311896
eng
info:eu-repo/semantics/altIdentifier/doi/10.1116/1.586709
info:eu-repo/semantics/altIdentifier/issn/0734-211X
info:eu-repo/semantics/altIdentifier/wos/A1993KN12600019
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775390
2019-11-18T15:47:07Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
In situ scanning-tunneling-microscopy studies of early-stage electromigration in Ag
Levine, L. E.
Reiss, Günter ; https://orcid.org/0000-0002-0918-5940
Smith, D. A.
ddc:530
Levine LE, Reiss G, Smith DA. In situ scanning-tunneling-microscopy studies of early-stage electromigration in Ag. <em>Physical Review, B</em>. 1993;48(2):858-863.
The mass-transport mechanisms that are responsible for the early stages (resistance change <1 percent) of electromigration damage in metals are poorly understood. A deeper understanding of these processes is important both for the direct application to metal lines in electronic devices and for expanding our basic knowledge of these complex phenomena. A major reason for our lack of understanding is that the structural changes that must take place during early-stage electromigration occur at extremely small length scales that are beyond the resolution capabilities of conventional electromigration experiments. We report in situ studies of early-stage electromigration using scanning tunneling microscopy. A single 2-my square region of a 2100-Å Ag film was studied under UHV conditions for over 200 h with current densities up to 4.5×10 to the power of 4 A/cm2. Although the temperature and resistivity of the sample remained nearly constant throughout this period, significant small-scale morphology changes occurred that were a result of the applied current.
American Physical Society (APS)
1993
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17753905
https://pub.uni-bielefeld.de/record/1775390
https://pub.uni-bielefeld.de/download/1775390/2311897
eng
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.48.85
info:eu-repo/semantics/altIdentifier/issn/ARRAY(0x7a822b8)
info:eu-repo/semantics/altIdentifier/wos/A1993LM88500020
info:eu-repo/semantics/altIdentifier/pmid/10007942
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775394
2018-07-24T12:58:27Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
New vacuum-ultraviolet absorption data for lead vapour obtained by spin-polarisation measurements
Heinzmann, Ulrich
ddc:530
Heinzmann U. New vacuum-ultraviolet absorption data for lead vapour obtained by spin-polarisation measurements. <em>Journal of Physics B: Atomic, Molecular and Optical Physics</em>. 1978;11(3):399-412.
The photoelectrons emitted by lead atoms exposed to circularly-polarised VUV radiation are partially spin polarised. Unlike the photoionisation cross section, the measured polarisation does not show autoionisation resonances as a function of wavelength. The polarisation and the known cross section results together yield new absorption data, which can be compared with the oscillator strengths of the Rydberg series in the discrete spectrum. Full information about the first three autoionisation resonances is also given. Some selected parts of the apparatus used for the spin-polarisation measurements are discussed in detail.
IOP Publishing
1978
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17753944
https://pub.uni-bielefeld.de/record/1775394
https://pub.uni-bielefeld.de/download/1775394/2311898
eng
info:eu-repo/semantics/altIdentifier/doi/10.1088/0022-3700/11/3/011
info:eu-repo/semantics/altIdentifier/issn/0022-3700
info:eu-repo/semantics/altIdentifier/wos/A1978ER67500011
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775396
2018-07-24T12:59:35Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Comment on the letter Photoionisation cross section and spin polarisation of photoelectrons from thallium by N.A. Cherenkov
Heinzmann, Ulrich
Kessler, J.
ddc:530
Heinzmann U, Kessler J. Comment on the letter Photoionisation cross section and spin polarisation of photoelectrons from thallium by N.A. Cherenkov. <em>Journal of Physics B: Atomic, Molecular and Optical Physics</em>. 1978;11(8):L265-L266.
IOP Publishing
1978
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17753962
https://pub.uni-bielefeld.de/record/1775396
https://pub.uni-bielefeld.de/download/1775396/2311899
eng
info:eu-repo/semantics/altIdentifier/doi/10.1088/0022-3700/11/8/002
info:eu-repo/semantics/altIdentifier/issn/0022-3700
info:eu-repo/semantics/altIdentifier/wos/A1978EZ36900002
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775399
2018-07-24T12:58:27Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Polarised photoelectrons produced at xenon atoms by circularly polarised synchrotron radiation
Heinzmann, Ulrich
Schäfers, F.
Thimm, K.
Wolcke, A.
Kessler, J.
ddc:530
Heinzmann U, Schäfers F, Thimm K, Wolcke A, Kessler J. Polarised photoelectrons produced at xenon atoms by circularly polarised synchrotron radiation. <em>Journal of Physics B: Atomic, Molecular and Optical Physics</em>. 1979;12(22):L679-L683.
Circularly polarised synchrotron radiation is used for producing spin polarised photoelectrons at xenon atoms. After a brief description of the apparatus the dependence of the electron polarisation on the photo energy is presented and compared with a theoretical prediction.
IOP Publishing
1979
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17753992
https://pub.uni-bielefeld.de/record/1775399
https://pub.uni-bielefeld.de/download/1775399/2311900
eng
info:eu-repo/semantics/altIdentifier/doi/10.1088/0022-3700/12/22/005
info:eu-repo/semantics/altIdentifier/issn/0022-3700
info:eu-repo/semantics/altIdentifier/wos/A1979HX88200005
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775405
2018-07-24T12:58:03Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Wavelength dependence of polarisation of photoelectrons ejected by unpolarised VUV radiation from argon and krypton atoms
Heinzmann, Ulrich
Schönhense, G.
Kessler, J.
ddc:530
Heinzmann U, Schönhense G, Kessler J. Wavelength dependence of polarisation of photoelectrons ejected by unpolarised VUV radiation from argon and krypton atoms. <em>Journal of Physics B: Atomic, Molecular and Optical Physics</em>. 1980;13(5):L153-L156.
IOP Publishing
1980
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17754058
https://pub.uni-bielefeld.de/record/1775405
https://pub.uni-bielefeld.de/download/1775405/2311901
eng
info:eu-repo/semantics/altIdentifier/doi/10.1088/0022-3700/13/5/006
info:eu-repo/semantics/altIdentifier/issn/0022-3700
info:eu-repo/semantics/altIdentifier/wos/A1980JM66200006
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775409
2018-07-24T12:59:35Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Polarised photoelectrons from silver atoms
Heinzmann, Ulrich
Wolcke, A.
Kessler, J.
ddc:530
Heinzmann U, Wolcke A, Kessler J. Polarised photoelectrons from silver atoms. <em>Journal of Physics B: Atomic, Molecular and Optical Physics</em>. 1980;13(16):3149-3156.
The polarisation of photoelectrons ejected by circularly polarised VUV radiation from silver atoms has been measured in the wavelength range between 150 and 160 nm. Autoionisation states give rise to pronounced resonance structures in the photoionisation cross section and in the photoelectron polarisation. The measured polarisation yields direct information on the angular momentum quantum numbers J of the autoionising states and on extrema of the cross section resonances.
IOP Publishing
1980
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17754099
https://pub.uni-bielefeld.de/record/1775409
https://pub.uni-bielefeld.de/download/1775409/2311902
eng
info:eu-repo/semantics/altIdentifier/doi/10.1088/0022-3700/13/16/012
info:eu-repo/semantics/altIdentifier/issn/0022-3700
info:eu-repo/semantics/altIdentifier/wos/A1980KJ70400012
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775421
2018-07-24T12:58:27Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
In situ scanning-tunneling-microscopy studies of current driven mass transport in Ag
Levine, L. E.
Reiss, Günter ; https://orcid.org/0000-0002-0918-5940
Smith, D. A.
Grain boundaries
Diffusion
Currents
Thin films
STM
Silver mass transfer
Electrophoresis
ddc:530
Levine LE, Reiss G, Smith DA. In situ scanning-tunneling-microscopy studies of current driven mass transport in Ag. <em>Journal of applied physics</em>. 1993;74(9):5476-5482.
We present the results of an ultrahigh vacuum (UHV) scanning-tunneling-microscopy study of large scale mass transport in current carrying metal films. Scans were taken in situ on a current carrying 2100-Å-thick Ag film with current densities ranging from 5.0×10 to the power of 4 A/cm2 up to 3.2×105 A/cm2, at which point the sample failed due to a runaway thermal fusing mechanism. Axial UHV inchworms allowed us to obtain data from the same 2-my m-square region of the sample throughout the experiment in spite of large temperature-induced drifts. Calculations of the driving forces demonstrate that the electromigration driving force was dominant for this current range. Significant topographical changes were observed including current aligned grain growth, current induced faceting, and complex mass flow divergences. A model that explains the observed divergences is presented. It is based upon diffusion in the presence of local inhomogeneities of the electric field.
AIP Publishing
1993
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17754211
https://pub.uni-bielefeld.de/record/1775421
https://pub.uni-bielefeld.de/download/1775421/2311909
eng
info:eu-repo/semantics/altIdentifier/doi/10.1063/1.354228
info:eu-repo/semantics/altIdentifier/issn/0021-8979
info:eu-repo/semantics/altIdentifier/wos/A1993MG59700030
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775425
2018-07-24T12:59:00Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Growth and structure of polycrystalline Cr/Au multilayered thin films
Brückl, Hubert
Vancea, Johann
Lecheler, R.
Reiss, Günter ; https://orcid.org/0000-0002-0918-5940
Hoffmann, Horst
ddc:530
Brückl H, Vancea J, Lecheler R, Reiss G, Hoffmann H. Growth and structure of polycrystalline Cr/Au multilayered thin films. <em>Thin solid films</em>. 1994;250(1-2):56-60.
Metallic multilayered thin films have recently been investigated due to their new magnetic and transport properties. The interest here is focussed on the characterization of the interfaces between the layers. The analysis of growth and structure of polycrystalline Cr/Au multilayers is accomplished by two complementary techniques: in situ ultrahigh vacuum scanning tunnelling microscopy and ex situ transmission electron microscopy. The combination of these powerful methods provides detailed information about structural characteristics such as crystallite size, surface roughness and crystallographic orientation. Moreover, conclusions can be drawn on the atomic arrangement and growth mechanism at the Cr-Au interface. The results are supported by semiempirical and theoretical expectations.
Elsevier BV
1994
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17754252
https://pub.uni-bielefeld.de/record/1775425
https://pub.uni-bielefeld.de/download/1775425/2311910
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/0040-6090(94)90165-1
info:eu-repo/semantics/altIdentifier/issn/0040-6090
info:eu-repo/semantics/altIdentifier/wos/A1994PJ73100011
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775431
2018-07-24T12:58:03Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Electronic transport properties and thickness dependence of the giant magnetoresistance in Co/Cu multilayers
Eckl, Th.
Reiss, Günter ; https://orcid.org/0000-0002-0918-5940
Brückl, Hubert
Hoffmann, Horst
Mean free path
Film growth
Electric conductivity
Thickness
Magnetoresistance
Multilayers
Copper
Cobalt
Scattering
Interfaces
ddc:530
Eckl T, Reiss G, Brückl H, Hoffmann H. Electronic transport properties and thickness dependence of the giant magnetoresistance in Co/Cu multilayers. <em>Journal of applied physics</em>. 1994;75(1):362-367.
The transport properties of electrons in Co/Cu multilayered thin films are of special interest for the giant magnetoresistance (GMR) of this system. The magnitude of this effect depends on the mean free paths and on the strength of the interface scattering which in turn are strongly related to film structure. In this article, we discuss the results of resistance and magnetoresistance measurements carried out during film growth. We characterize the electronic transport parameters of these films and the growth mechanism of the layers. The new technique of the in situ measurement of the magnetoresistance furthermore provides a tool to find correlations of the growth mechanism with the dependence of the GMR on the Co thickness.
AIP Publishing
1994
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17754312
https://pub.uni-bielefeld.de/record/1775431
https://pub.uni-bielefeld.de/download/1775431/2311911
eng
info:eu-repo/semantics/altIdentifier/doi/10.1063/1.355859
info:eu-repo/semantics/altIdentifier/issn/0021-8979
info:eu-repo/semantics/altIdentifier/wos/A1994MQ40200051
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775436
2018-07-24T12:58:03Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Mean-free-path concept in polycrystalline metals
Vancea, Johann
Reiss, Günter ; https://orcid.org/0000-0002-0918-5940
Hoffmann, Horst
ddc:530
Vancea J, Reiss G, Hoffmann H. Mean-free-path concept in polycrystalline metals. <em>Physical Review , B</em>. 1986;35(12):6435-6437.
A crude analysis of the observed thickness dependence of the conductivity in fine-grained metals shows a very weak connection with the resistivity caused by grain-boundary scattering. An "effective intrinsic mean free path" for the whole polycrystal, as introduced in the well-known theory of Mayadas and Shatzkes, cannot explain the observed size effect. It is impossible to define a mean free path for the whole polycrystal, especially if the resistivity is governed by grain-boundary scattering.
American Physical Society (APS)
1986
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17754361
https://pub.uni-bielefeld.de/record/1775436
https://pub.uni-bielefeld.de/download/1775436/2311912
eng
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.35.6435
info:eu-repo/semantics/altIdentifier/issn/0163-1829
info:eu-repo/semantics/altIdentifier/wos/A1987H069800059
info:eu-repo/semantics/altIdentifier/pmid/9940880
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775440
2018-07-24T12:58:27Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Search for polarized photoelectrons from molecules
Heinzmann, Ulrich
Kessler, J.
Kuhlmann, E.
ddc:530
Heinzmann U, Kessler J, Kuhlmann E. Search for polarized photoelectrons from molecules. <em>The Journal of Chemical Physics</em>. 1978;68(10):4753-4754.
AIP Publishing
1978
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17754404
https://pub.uni-bielefeld.de/record/1775440
https://pub.uni-bielefeld.de/download/1775440/2311913
eng
info:eu-repo/semantics/altIdentifier/doi/10.1063/1.435542
info:eu-repo/semantics/altIdentifier/issn/0021-9606
info:eu-repo/semantics/altIdentifier/wos/A1978FC14700063
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775444
2018-07-24T12:59:00Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Spin polarized photoelectrons from CO2 and N2O
Heinzmann, Ulrich
Schäfers, F.
Hess, B. A.
ddc:530
Heinzmann U, Schäfers F, Hess BA. Spin polarized photoelectrons from CO2 and N2O. <em>Chemical Physics Letters</em>. 1980;69(2):284-289.
The photoelectrons emerging from unpolarized CO2 and N2O molecules exposed to circularly polarized synchrotron radiation are spin polarized After a brief description of the apparatus the polarizations measured at the ionization threshold are presented and compared in the case of CO2, with a calculated, in an ab initio theory obtained value. Using the spin density matrix formalism a general expression for the spin polarization as a function of the dipole matrix elements is presented.
Elsevier BV
1980
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17754441
https://pub.uni-bielefeld.de/record/1775444
https://pub.uni-bielefeld.de/download/1775444/2311914
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/0009-2614(80)85064-0
info:eu-repo/semantics/altIdentifier/issn/0009-2614
info:eu-repo/semantics/altIdentifier/wos/A1980JF55100020
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775448
2018-07-24T12:58:03Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Spin polarized photoelectrons from atoms and molecules
Heinzmann, Ulrich
ddc:530
Heinzmann U. Spin polarized photoelectrons from atoms and molecules. <em>Applied Optics</em>. 1980;19(23):4087-4091.
This paper reviews the experimental activities since 1979 for the study of the spin polarization of photoelectrons emitted by atoms and molecules exposed to VUV radiation. Two series of studies have been performed: First, using unpolarized and linearly polarized radiation the photoionization of the rare gases Ar, Kr, and Xe has been studied in an angle-, energy-, and spin-resolved photoemission experiment. Second, the spin polarization of photoelectrons produced by circularly polarized VUV radiation has been measured for some atoms and molecules. This was performed for most targets by use of the synchrotron radiation in Bonn.
The Optical Society
1980
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-bipr-8887
https://pub.uni-bielefeld.de/record/1775448
https://pub.uni-bielefeld.de/download/1775448/2311915
eng
info:eu-repo/semantics/altIdentifier/issn/0003-6935
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775449
2018-07-24T12:59:00Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Spin-polarised photoelectrons from krypton and argon atoms exposed to circularly polarised synchrotron radiation
Heinzmann, Ulrich
Schäfers, F.
ddc:530
Heinzmann U, Schäfers F. Spin-polarised photoelectrons from krypton and argon atoms exposed to circularly polarised synchrotron radiation. <em>Journal of Physics B: Atomic, Molecular and Optical Physics</em>. 1980;13(13):L415-L419.
Circularly polarised synchrotron radiation has been used to produce spin-polarised photoelectrons from krypton and argon atoms (Fano effect (1969)). The results obtained experimentally in the autoionisation and the continuum regions are presented and discussed. In the case of argon they are compared with Lee's (1974) theoretical prediction.
IOP Publishing
1980
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17754497
https://pub.uni-bielefeld.de/record/1775449
https://pub.uni-bielefeld.de/download/1775449/2311916
eng
info:eu-repo/semantics/altIdentifier/doi/10.1088/0022-3700/13/13/003
info:eu-repo/semantics/altIdentifier/issn/0022-3700
info:eu-repo/semantics/altIdentifier/wos/A1980KD82600003
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775452
2018-07-24T12:58:27Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Experimental determination of the phase differences of continuum wavefunctions describing the photoionisation process of xenon atoms. I. Measurements of the spin polarisations of photoelectrons and their comparison with theoretical results
Heinzmann, Ulrich
ddc:530
Heinzmann U. Experimental determination of the phase differences of continuum wavefunctions describing the photoionisation process of xenon atoms. I. Measurements of the spin polarisations of photoelectrons and their comparison with theoretical results. <em>Journal of Physics B: Atomic, Molecular and Optical Physics</em>. 1980;13(22):4353-4366.
IOP Publishing
1980
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17754524
https://pub.uni-bielefeld.de/record/1775452
https://pub.uni-bielefeld.de/download/1775452/2311917
eng
info:eu-repo/semantics/altIdentifier/doi/10.1088/0022-3700/13/22/010
info:eu-repo/semantics/altIdentifier/issn/0022-3700
info:eu-repo/semantics/altIdentifier/wos/A1980KT76600010
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775454
2018-07-24T12:59:35Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Experimental determination of the phase differences of continuum wavefunctions describing the photoionisation process of xenon atoms. II. Evaluation of the matrix elements and the phase differences and their comparison with data in the discrete spectral range in application of the multichannel quantum defect theory
Heinzmann, Ulrich
ddc:530
Heinzmann U. Experimental determination of the phase differences of continuum wavefunctions describing the photoionisation process of xenon atoms. II. Evaluation of the matrix elements and the phase differences and their comparison with data in the discrete spectral range in application of the multichannel quantum defect theory. <em>Journal of Physics B: Atomic, Molecular and Optical Physics</em>. 1980;13(22):4367-4381.
Using the results on spin polarisation of photoelectrons reported in the previous paper the bound-free dipole matrix elements and the phase differences of the continuum wavefunctions have been determined. The comparison of these data with results obtained by other authors in the discrete spectral range of xenon shows excellent agreement at the photoionisation threshold. This agreement is experimental evidence for the validity of the multichannel quantum defect theory.
IOP Publishing
1980
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17754549
https://pub.uni-bielefeld.de/record/1775454
https://pub.uni-bielefeld.de/download/1775454/2311918
eng
info:eu-repo/semantics/altIdentifier/doi/10.1088/0022-3700/13/22/011
info:eu-repo/semantics/altIdentifier/issn/0022-3700
info:eu-repo/semantics/altIdentifier/wos/A1980KT76600011
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775456
2018-07-24T12:59:00Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Spin-polarised photoelectrons produced from CH3Br molecules by unpolarised and circularly polarised VUV radiation
Heinzmann, Ulrich
Osterheld, B.
Schäfers, F.
Schönhense, G.
ddc:530
Heinzmann U, Osterheld B, Schäfers F, Schönhense G. Spin-polarised photoelectrons produced from CH3Br molecules by unpolarised and circularly polarised VUV radiation. <em>Journal of Physics B: Atomic, Molecular and Optical Physics</em>. 1981;14(3):L79-L84.
It has been experimentally verified for CH3Br that spin-polarised photoelectrons can be ejected from unoriented molecules if the radiation is circularly polarised or even unpolarised. The polarisation values and the experimental data of the asymmetry parameter beta are discussed by use of Cherenkov's formulae (1981).
IOP Publishing
1981
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17754563
https://pub.uni-bielefeld.de/record/1775456
https://pub.uni-bielefeld.de/download/1775456/2311919
eng
info:eu-repo/semantics/altIdentifier/doi/10.1088/0022-3700/14/3/009
info:eu-repo/semantics/altIdentifier/issn/0022-3700
info:eu-repo/semantics/altIdentifier/wos/A1981LC27300009
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775461
2018-07-24T12:59:35Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
A laser-generated plasma as a source of VUV continuum radiation for photoelectronic spectroscopy
Heckenkamp, Ch.
Heinzmann, Ulrich
Schönhense, G.
Burgess, D. D.
Thorne, A. P.
Wheaton, J. E. G.
ddc:530
Heckenkamp C, Heinzmann U, Schönhense G, Burgess DD, Thorne AP, Wheaton JEG. A laser-generated plasma as a source of VUV continuum radiation for photoelectronic spectroscopy. <em>Journal of Physics D: Applied Physics</em>. 1981;14(12):L203-L206.
The feasibility of using laser-generated plasmas as VUV continuum sources for photoelectron spectroscopy has been demonstrated by measuring the spectral intensity distribution of the VUV continuum in the wavelength region from 79 to 43 nm by energy analysis of the photoelectrons ejected from argon atoms. The maximum photon flux obtained after reflection at a gold-coated spherical mirror was of the order of 10(11) photons nm(-1) per pulse at 50 nm for a laser energy of 830 mJ. The results show a shift of the emission maximum to lower wavelengths with increasing laser energy.
IOP Publishing
1981
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17754615
https://pub.uni-bielefeld.de/record/1775461
https://pub.uni-bielefeld.de/download/1775461/2311920
eng
info:eu-repo/semantics/altIdentifier/doi/10.1088/0022-3727/14/12/002
info:eu-repo/semantics/altIdentifier/issn/0022-3727
info:eu-repo/semantics/altIdentifier/issn/1361-6463
info:eu-repo/semantics/altIdentifier/wos/A1981MV87600002
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775479
2018-07-24T12:58:03Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Determination of molecular orientation in ultrathin films ofaminophenylthiolate on Cu(100) prepared by vapour phase deposition
Gölzhäuser, Armin ; https://orcid.org/0000-0002-0838-9028
Panov, S.
Wöll, Ch.
ddc:530
Gölzhäuser A, Panov S, Wöll C. Determination of molecular orientation in ultrathin films ofaminophenylthiolate on Cu(100) prepared by vapour phase deposition. <em>Surface Science</em>. 1994;314(1):L849-L856.
Ultrathin layers of aminophenylthiol on Cu(100) were prepared by vapour phase deposition of 4,4'-diaminodiphenyldisulphide (DAPS). Composition and molecular orientation in the films were determined by X-ray photoelectron spectroscopy (XPS) and near edge X-ray absorption fine structure (NEXAFS) spectroscopy. DAPS molecules adsorb on Cu(100) by dissociation of the intramolecular S-S bond and the formation of aminophenylthiolate at the copper surface. NEXAFS spectra indicate the presence of well-ordered monolayers with the plane of the phenyl ring tilted by 24° with respect to the surface normal. The same tilt-angle is found in the submonolayer regime.
Elsevier BV
1994
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17754793
https://pub.uni-bielefeld.de/record/1775479
https://pub.uni-bielefeld.de/download/1775479/2311929
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/0039-6028(94)90206-2
info:eu-repo/semantics/altIdentifier/issn/0039-6028
info:eu-repo/semantics/altIdentifier/wos/A1994NX33200006
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775499
2018-07-24T12:59:00Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Measurements and calculations of the circular polarization and of the absolute intensity of synchrotron radiation in the wavelength range from 40 to 100 nm
Heinzmann, Ulrich
Osterheld, B.
Schäfers, F.
ddc:530
Heinzmann U, Osterheld B, Schäfers F. Measurements and calculations of the circular polarization and of the absolute intensity of synchrotron radiation in the wavelength range from 40 to 100 nm. <em>Nuclear Instruments and Methods in Physics Research</em>. 1982;195(1-2):395-398.
Elsevier BV
1982
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17754993
https://pub.uni-bielefeld.de/record/1775499
https://pub.uni-bielefeld.de/download/1775499/2311942
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/0029-554X(82)90807-2
info:eu-repo/semantics/altIdentifier/issn/0167-5087
info:eu-repo/semantics/altIdentifier/wos/A1982NP43300060
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775503
2018-07-24T12:58:27Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Application of a threshold electron spectrometer in spin resolved photoelectron analysis
Heckenkamp, Ch.
Schäfers, F.
Heinzmann, Ulrich
Frey, R.
Schlag, E. W.
ddc:530
Heckenkamp C, Schäfers F, Heinzmann U, Frey R, Schlag EW. Application of a threshold electron spectrometer in spin resolved photoelectron analysis. <em>Nuclear Instruments and Methods in Physics Research</em>. 1983;208(1-3):805-808.
The paper shows that threshold photoelectron spectroscopy can be successfully performed, even if the spin polarization is the object of interest. Using circularly polarized radiation from the Bonn 2.5 GeV synchrotron photoelectrons from argon atoms produced directly at threshold have been analyzed with respect to their energy by means of a threshold electron spectrometer and with respect to their spin in order to test this combined method. The comparison of the experimental result with predictions of a RRPA-calculation shows quantitatively good agreement.
Elsevier BV
1983
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17755036
https://pub.uni-bielefeld.de/record/1775503
https://pub.uni-bielefeld.de/download/1775503/2311943
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/0167-5087(83)91224-3
info:eu-repo/semantics/altIdentifier/issn/0167-5087
info:eu-repo/semantics/altIdentifier/wos/A1983QS69900131
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775512
2018-07-24T12:59:35Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Angle- and spin-resolved photoelectron spectroscopy of the Hg 5d10 subshell
Schönhense, G.
Schäfers, F.
Heinzmann, Ulrich
Kessler, J.
ddc:530
Schönhense G, Schäfers F, Heinzmann U, Kessler J. Angle- and spin-resolved photoelectron spectroscopy of the Hg 5d10 subshell. <em>Zeitschrift für Physik A: Hadrons and Nuclei</em>. 1982;304(1):31-40.
Parameters describing electron spin polarization in Hg 5d10 subshell photoionization have been measured at rare-gas resonance wavelengths between 73.59 nm and 30.38 nm. The spin parameters as well as asymmetry parameters beta of a recent measurement are discussed in comparison with both nonrelativistic and relativistic ab initio calculations of several authors. The importance of many-electron correlations and spin-orbit coupling effects is considered. We would like to express our thanks to F. Combet Farnoux, N. Cherepkov, W. Johnson and S. Manson for useful correspondence as well as for the communication of unpublished results. This work was supported by the DFG and BMFT. One of us (G.S.) wishes to thank the Studienstiftung des Deutschen Volkes for financial support.
Springer Science and Business Media LLC
1982
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17755121
https://pub.uni-bielefeld.de/record/1775512
https://pub.uni-bielefeld.de/download/1775512/2311946
eng
info:eu-repo/semantics/altIdentifier/doi/10.1007/BF01432273
info:eu-repo/semantics/altIdentifier/issn/0340-2193
info:eu-repo/semantics/altIdentifier/issn/1434-601X
info:eu-repo/semantics/altIdentifier/wos/A1982MX38200005
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775517
2018-07-24T12:59:35Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Analysis of autoionization resonances in the Hg 6s2-photoionization by measurements of photoelectron polarization
Schäfers, F.
Schönhense, G.
Heinzmann, Ulrich
ddc:530
Schäfers F, Schönhense G, Heinzmann U. Analysis of autoionization resonances in the Hg 6s2-photoionization by measurements of photoelectron polarization. <em>Zeitschrift für Physik A: Hadrons and Nuclei</em>. 1982;304(1):41-48.
Measurements of the spin polarization of photoelectrons in the autoionization region of the Hg 6s2-subshell using circularly polarized synchrotron radiation and using unpolarized light from rare gas discharge lamps are reported. The results obtained show a pronounced structure across the resonances. Together with data of the cross section and its angular distribution these data from a complete parameter set for the determination of the transition matrix elements and the phase difference of the continuum wavefunctions. Evidences for strong configuration interaction and channel mixing between the open and closed channels were found. The matrix elements and their ratio vary strongly across the resonances and the relative phase shows some changes of sign. A change of the relative phase by Pi across an autoionization resonance, predicted by Fano, has been verified experimentally for the triplet resonance. We would like to express our gratitude to Professors W. Paul, G. Nöldeke and J. Kessler for their continued interest and encouragement. We thank Dr. D. Husmann, Dr. J. Hormes and B. Osterheld for their assistance in performing the experiment in Bonn. We are grateful to Dr. N.A. Cherepkov for helpful discussions and acknowledge support by the DFG and BMFT.
Springer Science and Business Media LLC
1982
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17755170
https://pub.uni-bielefeld.de/record/1775517
https://pub.uni-bielefeld.de/download/1775517/2311947
eng
info:eu-repo/semantics/altIdentifier/doi/10.1007/BF01432274
info:eu-repo/semantics/altIdentifier/issn/0340-2193
info:eu-repo/semantics/altIdentifier/issn/1434-601X
info:eu-repo/semantics/altIdentifier/wos/A1982MX38200006
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775521
2018-07-24T12:59:00Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
A source of highly spin-polarised slow electrons based on the Fano effect on caesium atoms
Möllenkamp, R.
Heinzmann, Ulrich
ddc:530
Möllenkamp R, Heinzmann U. A source of highly spin-polarised slow electrons based on the Fano effect on caesium atoms. <em>Journal of Physics E: Scientific Instruments</em>. 1982;15(6):692-696.
IOP Publishing
1982
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17755212
https://pub.uni-bielefeld.de/record/1775521
https://pub.uni-bielefeld.de/download/1775521/2311948
eng
info:eu-repo/semantics/altIdentifier/doi/10.1088/0022-3735/15/6/020
info:eu-repo/semantics/altIdentifier/issn/0022-3735
info:eu-repo/semantics/altIdentifier/wos/A1982NU28200021
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775524
2018-07-24T12:59:35Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
A capillary discharge tube for the production of intense VUV resonance radiation
Schönhense, G.
Heinzmann, Ulrich
ddc:530
Schönhense G, Heinzmann U. A capillary discharge tube for the production of intense VUV resonance radiation. <em>Journal of Physics E: Scientific Instruments</em>. 1983;16(1):74-82.
IOP Publishing
1983
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17755242
https://pub.uni-bielefeld.de/record/1775524
https://pub.uni-bielefeld.de/download/1775524/2311949
eng
info:eu-repo/semantics/altIdentifier/doi/10.1088/0022-3735/16/1/015
info:eu-repo/semantics/altIdentifier/issn/0022-3735
info:eu-repo/semantics/altIdentifier/wos/A1983PV55300015
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775527
2018-07-24T12:58:27Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Determination of partial photoionisation cross sections of methyl bromide in the first autoionisation range by use of spin polarisation photoelectron spectroscopy
Schäfers, F.
Baig, M. A.
Heinzmann, Ulrich
ddc:530
Schäfers F, Baig MA, Heinzmann U. Determination of partial photoionisation cross sections of methyl bromide in the first autoionisation range by use of spin polarisation photoelectron spectroscopy. <em>Journal of Physics B: Atomic, Molecular and Optical Physics</em>. 1983;16(1):L1-L6.
Using recent experimental data on photoelectron spin polarisation combined with the high-resolution spectrum of methyl bromide, which has also been recently reported, the partial photoionisation cross sections for the ionisation of CH3Br from the 4 pi ground-state orbital into the energy degenerate continua epsilon sigma , epsilon pi and epsilon delta have been determined separately. Quantitative results, obtained for the autoionising resonances between 116 and 118 nm, are reported and discussed.
IOP Publishing
1983
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17755275
https://pub.uni-bielefeld.de/record/1775527
https://pub.uni-bielefeld.de/download/1775527/2311950
eng
info:eu-repo/semantics/altIdentifier/doi/10.1088/0022-3700/16/1/001
info:eu-repo/semantics/altIdentifier/issn/0022-3700
info:eu-repo/semantics/altIdentifier/wos/A1983PY45200001
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775531
2018-07-24T12:59:35Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Analysis of Ar 3p6 and Kr 4p6 photoionization from photoelectron-spin-polarization data
Schäfers, F.
Schönhense, G.
Heinzmann, Ulrich
ddc:530
Schäfers F, Schönhense G, Heinzmann U. Analysis of Ar 3p6 and Kr 4p6 photoionization from photoelectron-spin-polarization data. <em>Physical Review A: Atomic, Molecular and Optical Physics</em>. 1983;28(2):802-814.
American Physical Society (APS)
1983
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17755313
https://pub.uni-bielefeld.de/record/1775531
https://pub.uni-bielefeld.de/download/1775531/2311951
eng
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevA.28.802
info:eu-repo/semantics/altIdentifier/issn/0556-2791
info:eu-repo/semantics/altIdentifier/wos/A1983RB52800035
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775535
2018-07-24T12:59:17Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Evidence of strong interchannel coupling in Hg 5d photoionization by experimental transition matrix elements
Schönhense, G.
Heinzmann, Ulrich
ddc:530
Schönhense G, Heinzmann U. Evidence of strong interchannel coupling in Hg 5d photoionization by experimental transition matrix elements. <em>Physical Review A: Atomic, Molecular and Optical Physics</em>. 1984;29(2):987-990.
American Physical Society (APS)
1984
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17755356
https://pub.uni-bielefeld.de/record/1775535
https://pub.uni-bielefeld.de/download/1775535/2311952
eng
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevA.29.987
info:eu-repo/semantics/altIdentifier/issn/0556-2791
info:eu-repo/semantics/altIdentifier/wos/A1984SB41000073
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775538
2018-07-24T12:59:00Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Singlet-triplet mixing in Hg 6s photoionisation via autoionising transitions
Schönhense, G.
Schäfers, F.
Heckenkamp, Ch.
Heinzmann, Ulrich
Baig, M. A.
ddc:530
Schönhense G, Schäfers F, Heckenkamp C, Heinzmann U, Baig MA. Singlet-triplet mixing in Hg 6s photoionisation via autoionising transitions. <em>Journal of Physics B: Atomic, Molecular and Optical Physics</em>. 1984;17(22):L771-L777.
New experimental photoabsorption cross section and angle-resolved photoelectron spin polarisation data for mercury are presented. For the first three autoionisation resonances above the Hg 6s threshold an analysis is performed in terms of transition amplitudes to the singlet and triplet continua. These quantities reveal that photoionisation dynamics is largely influenced by a rather complicated spectral behaviour of the triplet matrix element, including three changes of sign. Results are compared with quantum defect differences and ratios of oscillator strengths from the discrete spectrum.
IOP Publishing
1984
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17755388
https://pub.uni-bielefeld.de/record/1775538
https://pub.uni-bielefeld.de/download/1775538/2311953
eng
info:eu-repo/semantics/altIdentifier/doi/10.1088/0022-3700/17/22/002
info:eu-repo/semantics/altIdentifier/issn/0022-3700
info:eu-repo/semantics/altIdentifier/wos/A1984TU27900002
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775544
2018-07-24T12:58:03Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Resonances of the photoelectron spin-polarization parameters in the 5p autoionization range of xenon
Heckenkamp, Ch.
Schäfers, F.
Schönhense, G.
Heinzmann, Ulrich
ddc:530
Heckenkamp C, Schäfers F, Schönhense G, Heinzmann U. Resonances of the photoelectron spin-polarization parameters in the 5p autoionization range of xenon. <em>Physical Review A: Atomic, Molecular and Optical Physics</em>. 1985;32(2):1252-1255.
The spin-polarization parameters for photoelectrons from xenon atoms have been measured in the wavelength range between 96 and 100 nm in an angle-resolving experiment using circularly polarized synchrotron radiation. Theoretical calculations (relativistic random-phase approximation and multichannel quantum defect theory) generally reproduce the wavelength dependence of the parameters, but there are some systematic deviations from the experimental data.
American Physical Society (APS)
1985
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17755449
https://pub.uni-bielefeld.de/record/1775544
https://pub.uni-bielefeld.de/download/1775544/2311954
eng
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevA.32.1252
info:eu-repo/semantics/altIdentifier/issn/0556-2791
info:eu-repo/semantics/altIdentifier/wos/A1985ANG1100081
info:eu-repo/semantics/altIdentifier/pmid/9896196
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775549
2018-07-24T12:58:03Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Influence of temperature and of physisorbed Xe/Kr on the spin resolved photoemission from Pt(111)
Eyers, A.
Schönhense, G.
Friess, U.
Schäfers, F.
Heinzmann, Ulrich
ddc:530
Eyers A, Schönhense G, Friess U, Schäfers F, Heinzmann U. Influence of temperature and of physisorbed Xe/Kr on the spin resolved photoemission from Pt(111). <em>Surface Science</em>. 1985;162(1-3):96-102.
Spin polarized photoemission from Pt(111) has been studied under normal incidence and normal emission as function of the temperature between 30 and 550 K using circularly polarized synchrotron radiation of BESSY. The photoelectron intensities and the electron spin polarizations are reduced with increasing temperature and also by increasing coverage of physisorbed rare gas atoms.
Elsevier BV
1985
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17755498
https://pub.uni-bielefeld.de/record/1775549
https://pub.uni-bielefeld.de/download/1775549/2311955
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/0039-6028(85)90879-9
info:eu-repo/semantics/altIdentifier/issn/0039-6028
info:eu-repo/semantics/altIdentifier/wos/A1985AVA2900014
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1655499
2018-07-24T12:59:51Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
THE CRITICAL EXPONENTS OF THE DECONFINEMENT TRANSITION IN SU(2) LATTICE GAUGE-THEORY
Engels, Jürgen
JERSAK, J
KANAYA, K
Laermann, Edwin
LANG, CB
Neuhaus, Thomas
Satz, Helmut
ddc:530
Engels J, JERSAK J, KANAYA K, et al. THE CRITICAL EXPONENTS OF THE DECONFINEMENT TRANSITION IN SU(2) LATTICE GAUGE-THEORY. <em>NUCLEAR PHYSICS B</em>. 1987;280(4):577-598.
ELSEVIER SCIENCE BV
1987
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-16554997
https://pub.uni-bielefeld.de/record/1655499
https://pub.uni-bielefeld.de/download/1655499/2311158
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/0550-3213(87)90163-5
info:eu-repo/semantics/altIdentifier/issn/0550-3213
info:eu-repo/semantics/altIdentifier/wos/A1987H239800001
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1773068
2018-07-24T12:58:58Z
conference
doc-type:conferenceObject
ddc:530
conferenceFtxt
open_access
2-Photon Laser Scanning Microscopy on Native Human Cartilage
Martini, Jörg
Tönsing, Katja
Dickob, Michael
Anselmetti, Dario ; https://orcid.org/0000-0002-8720-4369
Biomedical imaging
Multiphoton processes
Human cartilage
Three-dimensional microscopy
ddc:530
Martini J, Tönsing K, Dickob M, Anselmetti D. 2-Photon Laser Scanning Microscopy on Native Human Cartilage. In: <em>Proceedings of SPIE - The International Society for Optical Engineering</em>. Vol 5860. The International Society for Optical Engineering; 2005: 16-21.
Native hyaline cartilage from a human knee joint was directly investigated with laser scanning microscopy via 2-photon autofluorescence excitation with no additional staining or labelling protocols in a nondestructive and sterile manner. Using a femtosecond, near-infrared (NIR) Ti:Sa laser for 2-photon excitation and a dedicated NIR long distance objective, autofluorescence imaging and measurements of the extracellular matrix (ECM) tissue with incorporated chondrocytes were possible with a penetration depth of up to 460 µm inside the sample. Via spectral autofluorescence separation these experiments allowed the discrimination of chondrocytes from the ECM and therefore an estimate of chondrocytic cell density within the cartilage tissue to approximately 0.2-2·10 7/cm³. Furthermore, a comparison of the relative autofluorescence signals between nonarthritic and arthritic cartilage tissue exhibited distinct differences in tissue morphology. As these morphological findings are in keeping with the macroscopic diagnosis, our measurement has the potential of being used in future diagnostic applications.
The International Society for Optical Engineering
2005
http://purl.org/coar/resource_type/c_5794
info:eu-repo/semantics/conferenceObject
doc-type:conferenceObject
text
https://nbn-resolving.org/urn:nbn:de:0070-bipr-21
https://pub.uni-bielefeld.de/record/1773068
https://pub.uni-bielefeld.de/download/1773068/2311188
eng
info:eu-repo/semantics/altIdentifier/doi/10.1117/12.632940
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1773089
2018-07-24T12:59:13Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Poly(oxyethylene) based surface coatings for poly(dimethylsiloxane) microchannels
Hellmich, Wibke
Regtmeier, Jan
Duong, Thanh Tu
Ros, Robert
Anselmetti, Dario ; https://orcid.org/0000-0002-8720-4369
Ros, Alexandra
ddc:530
Hellmich W, Regtmeier J, Duong TT, Ros R, Anselmetti D, Ros A. Poly(oxyethylene) based surface coatings for poly(dimethylsiloxane) microchannels. <em>Langmuir</em>. 2005;21(16):7551-7557.
Control of surface properties in microfluidic systems is an indispensable prerequisite for successful bioanalytical applications. Poly(dimethylsiloxane) (PDMS) microfluidic devices are hampered from unwanted adsorption of biomolecules and lack of methods to control electroosmotic flow (EOF). In this paper, we propose different strategies to. coat PDMS surfaces with poly(oxyethylene) (POE) molecules of varying chain lengths. The native PDMS surface is pretreated by exposure to UV irradiation or to an oxygen plasma, and the covalent linkage of POE-silanes as well as physical adsorption of a triblock-copolymer (F108) are studied. Contact angle measurements and atomic force microscopy (AFM) imaging revealed homogeneous attachment of POE-silanes and F108 to the PDMS surfaces. In the case of F108, different adsorption mechanisms to hydrophilic and hydrophobic PDMS are discussed. Determination of the electroosmotic mobilities of these coatings in PDMS microchannels prove their use for electrokinetic applications in which EOF reduction is inevitable and protein adsorption has to be suppressed.
American Chemical Society (ACS)
2005
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17730891
https://pub.uni-bielefeld.de/record/1773089
https://pub.uni-bielefeld.de/download/1773089/2311192
eng
info:eu-repo/semantics/altIdentifier/doi/10.1021/la0510432
info:eu-repo/semantics/altIdentifier/issn/0743-7463
info:eu-repo/semantics/altIdentifier/issn/1520-5827
info:eu-repo/semantics/altIdentifier/wos/000230839600073
info:eu-repo/semantics/altIdentifier/pmid/16042494
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1773095
2018-07-24T12:58:25Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Single cell manipulation, analytics, and label-free protein detection in microfluidic devices for systems nanobiology
Hellmich, Wibke
Pelargus, Christoph
Leffhalm, Kai
Ros, Alexandra
Anselmetti, Dario ; https://orcid.org/0000-0002-8720-4369
Protein
Miniaturization
Single cell analytics
Microfluidic device
Native UV-LIF detection
ddc:530
Hellmich W, Pelargus C, Leffhalm K, Ros A, Anselmetti D. Single cell manipulation, analytics, and label-free protein detection in microfluidic devices for systems nanobiology. <em>Electrophoresis</em>. 2005;26(19):3689-3696.
Single cell analytics for proteomic analysis is considered a key method in the framework of systems nanobiology which allows a novel proteomics without being subjected to ensemble-averaging, cell-cycle, or cell-population effects. We are currently developing a single cell analytical method for protein fingerprinting combining a structured microfluidic device with latest optical laser technology for single cell manipulation (trapping and steering), free-solution electrophoretical protein separation, and (label-free) protein detection. In this paper we report on first results of this novel analytical device focusing on three main issues. First, single biological cells were trapped, injected, steered, and deposited by means of optical tweezers in a poly(dimethylsiloxane) microfluidic device and consecutively lysed with SDS at a predefined position. Second, separation and detection of fluorescent dyes, amino acids, and proteins were achieved with LIF detection in the visible (VIS) (488 nm) as well as in the deep UV (266 nm) spectral range for label-free, native protein detection. Minute concentrations of 100 fM injected fluorescein could be detected in the VIS and a first protein separation and label-free detection could be achieved in the UV spectral range. Third, first analytical experiments with single Sf9 insect cells (Spodoptera frugiperda) in a tailored microfluidic device exhibiting distinct electropherograms of a green fluorescent protein-construct proved the validity of the concept. Thus, the presented microfluidic concept allows novel and fascinating single cell experiments for systems nanobiology in the future.
Wiley
2005
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17730957
https://pub.uni-bielefeld.de/record/1773095
https://pub.uni-bielefeld.de/download/1773095/2311193
eng
info:eu-repo/semantics/altIdentifier/doi/10.1002/elps.200500185
info:eu-repo/semantics/altIdentifier/issn/0173-0835
info:eu-repo/semantics/altIdentifier/issn/1522-2683
info:eu-repo/semantics/altIdentifier/wos/000232579700012
info:eu-repo/semantics/altIdentifier/pmid/16152668
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1773110
2018-07-24T12:58:25Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Two-state migration of DNA in a structured microchannel
Streek, Martin
Schmid, Friederike
Duong, Thanh Tu
Anselmetti, Dario ; https://orcid.org/0000-0002-8720-4369
Ros, Alexandra
ddc:530
Streek M, Schmid F, Duong TT, Anselmetti D, Ros A. Two-state migration of DNA in a structured microchannel. <em>Physical review, E</em>. 2005;71(1): 11905.
DNA migration in topologically structured microchannels with periodic cavities is investigated experimentally and with Brownian dynamics simulations of a simple bead-spring model. The results are in very good agreement with one another. In particular, the experimentally observed migration order of [lambda]- and T2-DNA molecules is reproduced by the simulations. The simulation data indicate that the mobility may depend on the chain length in a nonmonotonic way at high electric fields. This is found to be the signature of a nonequilibrium bistability between two different migration states, a slow one and a fast one. The latter can also be observed experimentally under appropriate conditions.
American Physical Society (APS)
2005
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17731105
https://pub.uni-bielefeld.de/record/1773110
https://pub.uni-bielefeld.de/download/1773110/2311196
eng
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevE.71.011905
info:eu-repo/semantics/altIdentifier/issn/1539-3755
info:eu-repo/semantics/altIdentifier/issn/1550-2376
info:eu-repo/semantics/altIdentifier/wos/000227459200060
info:eu-repo/semantics/altIdentifier/pmid/15697628
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1773116
2018-07-24T12:59:13Z
conference
doc-type:conferenceObject
ddc:530
conferenceFtxt
open_access
Towards single cell fingerprinting in microfluidic device format : single cell manipulation, protein separation and detection
Hellmich, Wibke
Leffhalm, Kai
Sischka, Andy
Duong, Thanh Tu
Jensen, Nickels
Niehaus, Karsten
Tönsing, Katja
Ros, Alexandra
Anselmetti, Dario ; https://orcid.org/0000-0002-8720-4369
Jensen, Klavs F.
Single cell analysis
Microfluidics
Protein separation
Label-free detection
ddc:530
Hellmich W, Leffhalm K, Sischka A, et al. Towards single cell fingerprinting in microfluidic device format : single cell manipulation, protein separation and detection. In: Jensen KF, ed. <em>Micro total analysis systems 2005. Proceedings of µTAS 2005</em>. Conference Proceedings on Miniaturized Systems for Chemistry and Life Sciences (µTAS). Vol 1. Boston: The Chemical and Biological Microsystems Society (CBMS); 2005: 406-408.
The Chemical and Biological Microsystems Society (CBMS)
2005
http://purl.org/coar/resource_type/c_5794
info:eu-repo/semantics/conferenceObject
doc-type:conferenceObject
text
https://nbn-resolving.org/urn:nbn:de:0070-bipr-139
https://pub.uni-bielefeld.de/record/1773116
https://pub.uni-bielefeld.de/download/1773116/2311197
eng
info:eu-repo/semantics/altIdentifier/isbn/0-9743611-1-9
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1773125
2018-07-24T12:58:01Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Absence of intrinsic electric conductivity in single dsDNA molecules
Kleine, Hermann
Wilke, Ralf
Pelargus, Christoph
Rott, Karsten
Pühler, Alfred ; https://orcid.org/0000-0003-4723-2960
Reiss, Günter
Ros, Robert
Anselmetti, Dario ; https://orcid.org/0000-0002-8720-4369
DNA conductivity
Current-voltage spectroscopy
Microstructures
ddc:530
Kleine H, Wilke R, Pelargus C, et al. Absence of intrinsic electric conductivity in single dsDNA molecules. <em>Journal of Biotechnology</em>. 2004;112(1-2):91-95.
The intrinsic dc conductivity of long, individual lambda phage dsDNA molecules has been investigated by ultrasensitive low current-voltage-spectroscopy (IV) under ambient conditions and controlled low humidity inert gas atmosphere on microfabricated metal-insulator-metal gap structures. We found a strong dependence of the measured conductivity on the apparent humidity, which we attribute to capillary condensation of water to the immobilized DNA molecules, giving rise to additional ionic currents. Additional IV-spectroscopy experiments under controlled argon atmosphere always revealed a significant drop in electrical conductivity to 4 × 10 -15 AV -1 µm -1, indicating almost no considerable contribution of electrical long range charge transport.
Elsevier BV
2004
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17731258
https://pub.uni-bielefeld.de/record/1773125
https://pub.uni-bielefeld.de/download/1773125/2311198
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jbiotec.2004.04.031
info:eu-repo/semantics/altIdentifier/issn/0168-1656
info:eu-repo/semantics/altIdentifier/wos/000223578600010
info:eu-repo/semantics/altIdentifier/pmid/15288944
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1773135
2018-07-24T12:59:13Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Large-scale homogeneous molecular templates for femtosecond time-resolved studies of the guest-host interaction
Siffalovic, Peter
Michelswirth, Martin
Bartz, Peter
Decker, Björn
Agena, Ceno
Schäfer, Christian
Molter, Stephan
Ros, Robert
Bach, Markus
Neumann, Manfred
Anselmetti, Dario ; https://orcid.org/0000-0002-8720-4369
Mattay, Jochen
Heinzmann, Ulrich
Drescher, Markus
Molecular recognition
Molecular dynamics
Guest-host interaction
Self-assembled monolayer
ddc:530
Siffalovic P, Michelswirth M, Bartz P, et al. Large-scale homogeneous molecular templates for femtosecond time-resolved studies of the guest-host interaction. <em>Journal of Biotechnology</em>. 2004;112(1-2):139-149.
Self-assembled monolayer films based on iodobenzoyloxy-functionalized resorc[4]arenes were prepared on gold substrates to serve as model systems for future time-resolved studies of molecular recognition, a mechanism of outstanding importance in bioorganic systems. The film properties were tested using X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM) and imaging ellipsometry. An apparatus for time-resolved electron spectroscopy utilizing femtosecond soft X-ray pulses is capable of detecting iodine core-level photolines and the photoinduced dissociation after ultraviolet illumination. The developed technique holds promise for tracking the temporal evolution of chemical shifts of atomic markers as local probes for the dynamics of the guest-host interaction.
Elsevier BV
2004
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17731355
https://pub.uni-bielefeld.de/record/1773135
https://pub.uni-bielefeld.de/download/1773135/2311200
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jbiotec.2004.04.023
info:eu-repo/semantics/altIdentifier/issn/0168-1656
info:eu-repo/semantics/altIdentifier/wos/000223578600015
info:eu-repo/semantics/altIdentifier/pmid/15288949
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1773145
2018-07-24T12:58:58Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Proteinen auf der Spur: native UV Fluoreszenz, ein markierungsfreies Detektionsverfahren für die höchstempfindliche Analytik von Proteinen in Acrylamidgelen
Rögener, Jan
Kahre, Tobias
Tönsing, Katja
Anselmetti, Dario ; https://orcid.org/0000-0002-8720-4369
ddc:530
Rögener J, Kahre T, Tönsing K, Anselmetti D. Proteinen auf der Spur: native UV Fluoreszenz, ein markierungsfreies Detektionsverfahren für die höchstempfindliche Analytik von Proteinen in Acrylamidgelen. <em>BIOforum</em>. 2004;27(4):42-43.
GIT Verlag
2004
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-bipr-197
https://pub.uni-bielefeld.de/record/1773145
https://pub.uni-bielefeld.de/download/1773145/2311201
deu
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1773148
2018-07-24T12:59:33Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Single molecule force spectroscopy on ligand-DNA complexes: from molecular binding mechanisms to biosensor applications
Ros, Robert
Eckel, Rainer
Bartels, Frank Wilco
Sischka, Andy
Baumgarth, Birgit
Wilking, Sven David
Pühler, Alfred ; https://orcid.org/0000-0003-4723-2960
Sewald, Norbert ; https://orcid.org/0000-0002-0309-2655
Becker, Anke
Anselmetti, Dario ; https://orcid.org/0000-0002-8720-4369
Optical tweezers
Single molecule force spectroscopy
Atomic force microscopy
Ligand–DNA interaction
ddc:530
Ros R, Eckel R, Bartels FW, et al. Single molecule force spectroscopy on ligand-DNA complexes: from molecular binding mechanisms to biosensor applications. <em>Journal of Biotechnology</em>. 2004;112(1-2):5-12.
Recent developments in single molecule force spectroscopy (SMFS) allow direct observation and measurements of forces that hold protein-DNA complexes together. Furthermore, the mechanics of double-stranded (ds) DNA molecules in the presence of small binding ligands can be detected. The results elucidate molecular binding mechanisms and open the way for ultra sensitive and powerful biosensor applications.
Elsevier BV
2004
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17731486
https://pub.uni-bielefeld.de/record/1773148
https://pub.uni-bielefeld.de/download/1773148/2311202
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jbiotec.2004.04.029
info:eu-repo/semantics/altIdentifier/issn/0168-1656
info:eu-repo/semantics/altIdentifier/wos/000223578600002
info:eu-repo/semantics/altIdentifier/pmid/15288936
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1773161
2018-07-24T12:59:13Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Towards single molecule analysis in PDMS microdevices: from the detection of ultra low dye concentrations to single DNA molecule studies
Ros, Alexandra
Hellmich, Wibke
Duong, Thanh Tu
Anselmetti, Dario ; https://orcid.org/0000-0002-8720-4369
Poly(dimethylsiloxane)
Microchip separation
DNA migration
Single molecule detection
ddc:530
Ros A, Hellmich W, Duong TT, Anselmetti D. Towards single molecule analysis in PDMS microdevices: from the detection of ultra low dye concentrations to single DNA molecule studies. <em>Journal of biotechnology</em>. 2004;112(1-2):65-72.
In this paper, we report on the performance of electrophoretical separation and laser-induced fluorescence (LIF) detection of dyes and fluorescently labeled biomolecules in poly(dimethylsiloxane) (PDMS) microdevices. The dyes fluorescein and fluorescein isothiocyanate (FITC) have been separated effectively in nM concentrations. Fluorescein injections gave linear concentration response in the range from 4 to 100 pM. As ultimate detection sensitivity, 100 fM injected fluorescein was obtained. Further, 100 fM injected fluorescein could be detected. This is to our knowledge the smallest electrokinetically injected dye concentration detected on a microchip. Injection studies of fluorescently labeled avidin revealed a theoretical detection limit of 25nM for laser-induced fluorescence detection in good agreement with separations in glass chips. Furthermore, the injection of several and even one single DNA molecule using a PDMS cross injector has been demonstrated as well as free solution separation of [lambda]- and T2-DNA (60pM each) in periodically structured channels.
Elsevier BV
2004
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17731614
https://pub.uni-bielefeld.de/record/1773161
https://pub.uni-bielefeld.de/download/1773161/2311203
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jbiotec.2004.04.020
info:eu-repo/semantics/altIdentifier/issn/0168-1656
info:eu-repo/semantics/altIdentifier/wos/000223578600007
info:eu-repo/semantics/altIdentifier/pmid/15288941
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1773166
2018-07-24T12:59:13Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Compact microscope-based optical tweezers system for molecular manipulation
Sischka, Andy
Eckel, Rainer
Tönsing, Katja
Ros, Robert
Anselmetti, Dario ; https://orcid.org/0000-0002-8720-4369
ddc:530
Sischka A, Eckel R, Tönsing K, Ros R, Anselmetti D. Compact microscope-based optical tweezers system for molecular manipulation. <em>Review of scientific instruments</em>. 2003;74(11):4827-4831.
A compact single beam optical tweezers system for force measurements and manipulation of individual double-stranded deoxyribonucleic acid (DNA) molecules was integrated into a commercial inverted optical microscope. A maximal force of 150 pN combined with a force sensitivity of less than 0.5 pN allows measurements of elastic properties of single molecules which complements and overlaps the force regime accessible with atomic force microscopy (AFM). The manipulation and measurement performance of this system was tested with individual [lambda]-DNA molecules and renders new aspects of dynamic forces phenomena with higher precision in contrast to AFM studies. An integrated liquid handling system with a fluid cell allows investigation of the force response of individual DNA molecules in the presence of DNA binding agents. Comparison of YOYO-1-, ethidium bromide intercalated DNA, and distamycin-A complexed DNA revealed accurate and reproducible differences in the force response to an external load. This opens the possibility to use it as a single molecule biosensor to investigate DNA binding agents and even to identify molecular binding mechanisms.
AIP Publishing
2003
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17731660
https://pub.uni-bielefeld.de/record/1773166
https://pub.uni-bielefeld.de/download/1773166/2311204
eng
info:eu-repo/semantics/altIdentifier/doi/10.1063/1.1619545
info:eu-repo/semantics/altIdentifier/issn/0034-6748
info:eu-repo/semantics/altIdentifier/wos/000186256400035
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1773175
2018-07-24T12:58:01Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Size-dependent free solution DNA electrophoresis in structured microfluidic systems
Duong, Thanh Tu
Kim, Gyuman
Ros, Robert
Streek, Martin
Schmid, Friederike
Brugger, Jürgen
Anselmetti, Dario ; https://orcid.org/0000-0002-8720-4369
Ros, Alexandra
Fluorescence microscopy
Single molecule
Contact lithography
Microchip
Electrophoresis
DNA
ddc:530
Duong TT, Kim G, Ros R, et al. Size-dependent free solution DNA electrophoresis in structured microfluidic systems. <em>Microelectronic Engineering</em>. 2003;67-68(1):905-912.
A new concept based on microstructuring techniques is presented to achieve size-dependent electrophoretic migration of DNA in free solution. Topographically structured microfluidic channels with periodical cavities in the range of the radius of gyration of the tested DNA molecules (< 3 µm) are produced by moulding of polydimethylsiloxane on a master wafer fabricated by contact lithography of SU-8 photoresist. The electrophoretic migration of single DNA molecules stained with the intercalator YOYO was investigated by real-time fluorescence video microscopy. It could be demonstrated for large DNA molecules that [lambda]-DNA (48 kbp) always migrated significantly faster than T2-DNA (164 kbp) in the two tested microchannel layouts. Integration into a microdevice for DNA separation in free solution is now in progress.
Elsevier BV
2003
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17731753
https://pub.uni-bielefeld.de/record/1773175
https://pub.uni-bielefeld.de/download/1773175/2311205
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/S0167-9317(03)00153-9
info:eu-repo/semantics/altIdentifier/issn/0167-9317
info:eu-repo/semantics/altIdentifier/wos/000183842100126
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1773190
2018-07-24T12:58:58Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Ultrasensitive detection of unstained proteins in acrylamide gels by native UV fluorescence
Rögener, Jan
Lutter, Petra
Reinhardt, Ralf
Blüggel, Martin
Meyer, Helmut E.
Anselmetti, Dario ; https://orcid.org/0000-0002-8720-4369
ddc:530
Rögener J, Lutter P, Reinhardt R, Blüggel M, Meyer HE, Anselmetti D. Ultrasensitive detection of unstained proteins in acrylamide gels by native UV fluorescence. <em>Analytical chemistry</em>. 2003;75(1):157-159.
Visualization of proteins inside acrylamide and other gels usually relies on different staining methods. To omit the protein-staining procedure, we visualized unstained proteins inside acrylamide gels by laser excitation with ultraviolet (UV) light (280 nm, 35 mJ/cm²) and directly detected native UV fluorescence. In one-dimensional gels, a detection limit as low as 1 ng for bovine serum albumin and 5 ng for other proteins with a linear dynamic range (2.7 orders of magnitude) comparable to state of the art fluorescent dyes could be achieved. In addition, the application of this method to 20 µg of a whole cell lysate separated in a two-dimensional gel showed more than 600 spots. Since protein labeling always represents a serious obstacle in protein identification technologies, the working efficiency with our procedure can be considered as a significant improvement for protein visualization and reproducibility in proteomics.
American Chemical Society (ACS)
2003
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17731903
https://pub.uni-bielefeld.de/record/1773190
https://pub.uni-bielefeld.de/download/1773190/2311207
eng
info:eu-repo/semantics/altIdentifier/doi/10.1021/ac020517o
info:eu-repo/semantics/altIdentifier/issn/0003-2700
info:eu-repo/semantics/altIdentifier/issn/1520-6882
info:eu-repo/semantics/altIdentifier/wos/000180233300030
info:eu-repo/semantics/altIdentifier/pmid/12530833
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1773196
2018-07-24T12:58:25Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Ultrasensitive Detektion von ungefärbten Proteinen in Acrylamidgelen durch native UV Fluoreszenz
Rögener, Jan
Lutter, Petra
Reinhardt, Ralf
Blüggel, Martin
Anselmetti, Dario ; https://orcid.org/0000-0002-8720-4369
Meyer, Helmut E.
ddc:530
Rögener J, Lutter P, Reinhardt R, Blüggel M, Anselmetti D, Meyer HE. Ultrasensitive Detektion von ungefärbten Proteinen in Acrylamidgelen durch native UV Fluoreszenz. <em>BIOspektrum</em>. 2003;9:468-470.
Springer Science + Business Media
2003
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-bipr-280
https://pub.uni-bielefeld.de/record/1773196
https://pub.uni-bielefeld.de/download/1773196/2311208
deu
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1773201
2018-07-24T12:59:33Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Biointerface analysis on a molecular level: new tools for biosensor research
Tiefenauer, Louis
Ros, Robert
AFM
Biointerface analysis
Biosensor
Nanotechnology
ddc:530
Tiefenauer L, Ros R. Biointerface analysis on a molecular level: new tools for biosensor research. <em>Colloids and surfaces, B: Biointerfaces</em>. 2002;23(2-3):95-114.
In the last decade various techniques have been developed to investigate biointerfaces on a molecular level. Here, their impact for biointerface analysis is reviewed with emphasis on biosensor research. In order to demonstrate the power and limitations of local probe methods the imaging and force spectroscopy on single molecules are presented in details.
Elsevier BV
2002
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17732018
https://pub.uni-bielefeld.de/record/1773201
https://pub.uni-bielefeld.de/download/1773201/2311209
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/S0927-7765(01)00228-4
info:eu-repo/semantics/altIdentifier/issn/0927-7765
info:eu-repo/semantics/altIdentifier/wos/000173128400002
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1773222
2018-07-24T12:58:58Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
All-photoplastic, soft cantilever cassette probe for scanning force microscopy
Genolet, Grégoire
Despont, Michel
Vettiger, Peter
Anselmetti, Dario ; https://orcid.org/0000-0002-8720-4369
Rooij, Nico F. de
ddc:530
Genolet G, Despont M, Vettiger P, Anselmetti D, Rooij NF de. All-photoplastic, soft cantilever cassette probe for scanning force microscopy. <em>Journal of vacuum science & technology, B</em>. 2000;18(2):617-620.
Multiple single-lever probes for scanning force microscopy arranged in a cassette design and made of a low-stiffness photoplastic material have been developed and successfully tested by imaging DNA molecules. The new concept consists of a column of a one-dimensional array of cantilevers with integrated tips, the first of which is used for imaging and the others are spares in case the first one becomes degraded. When this happens, the lever is mechanically removed from the chip so that the next spare becomes ready for scanning. The probes are fabricated of a photoplastic material, which allows simple batch fabrication and facilitates realization of specific mechanical properties for cantilevers - such as low stiffness - that are very difficult to achieve with classical silicon technology. The batch fabrication process, based on spin coating and subsequent near-ultraviolet exposure and development steps of the photoplastic SU-8, results in well-controlled and uniform mechanical properties of the probes within the same chip, as well as for different chips over a 4 in. wafer. Successful images of soft, condensed-matter samples were taken using these cassette probes, making consecutive readdressing of the same DNA molecule with two different cantilevers possible. Thus, a worn-out cantilever can be replaced by a new fresh one with only small positional adjustments and without any changes in the operating conditions. This ease of operation was provided by the cassette concept and the excellent uniformity of the mechanical cantilever characteristics.
American Vacuum Society
2000
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17732228
https://pub.uni-bielefeld.de/record/1773222
https://pub.uni-bielefeld.de/download/1773222/2311212
eng
info:eu-repo/semantics/altIdentifier/doi/10.1116/1.591248
info:eu-repo/semantics/altIdentifier/issn/0734-211X
info:eu-repo/semantics/altIdentifier/wos/000086587000003
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1773228
2018-07-24T12:58:25Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Single molecule DNA biophysics with atomic force microscopy
Anselmetti, Dario ; https://orcid.org/0000-0002-8720-4369
Fritz, Jürgen
Smith, Benjamin
Fernandez-Busquets, Xavier
ddc:530
Anselmetti D, Fritz J, Smith B, Fernandez-Busquets X. Single molecule DNA biophysics with atomic force microscopy. <em>Single molecules</em>. 2000;1(1):53-58.
Structural and functional properties of double stranded deoxyribonucleic acid (dsDNA) are investigated by atomic force microscopy (AFM) on a single molecule level. Here, we characterize different linear and circular DNA systems in terms of their geometry and topology, and visualize enzyme binding of restriction endonuclease Hae III to DNA. Manipulation of single DNA molecules is demonstrated by dissecting individual DNA strands. Furthermore, the elastic response of single DNA molecules to an externally applied force is investigated by AFM force spectroscopy experiments. This gives information about structural properties of the DNA double helix. Specifically, transition from B-form to S-form DNA and a melting transition from double stranded to single stranded DNA is observed. This allows monitoring of specific interaction and binding of small intercalator molecules such as ethidium bromide (EtBr) to DNA by means of a mechanical, non-fluorescent detection scheme.
Wiley
2000
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17732281
https://pub.uni-bielefeld.de/record/1773228
https://pub.uni-bielefeld.de/download/1773228/2311213
eng
info:eu-repo/semantics/altIdentifier/doi/10.1002/(SICI)1438-5171(200004)1:1<53::AID-SIMO53>3.0.CO;2-U
info:eu-repo/semantics/altIdentifier/issn/1438-5163
info:eu-repo/semantics/altIdentifier/issn/1438-5171
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1773241
2018-07-24T12:58:58Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Unbinding forces of single antibody-antigen complexes correlate with their thermal dissociation rates
Schwesinger, Falk
Ros, Robert
Strunz, Torsten
Anselmetti, Dario ; https://orcid.org/0000-0002-8720-4369
Güntherodt, Hans-Joachim
Honegger, Annemarie
Jermutus, Lutz
Tiefenauer, Louis
Plückthun, Andreas
ddc:530
Schwesinger F, Ros R, Strunz T, et al. Unbinding forces of single antibody-antigen complexes correlate with their thermal dissociation rates. <em>Proceedings of the National Academy of Sciences of the United States of America</em>. 2000;97(18):9972-9977.
Point mutants of three unrelated antifluorescein antibodies were constructed to obtain nine different single-chain Fv fragments, whose on-rates, off-rates, and equilibrium binding affinities were determined in solution. Additionally, activation energies for unbinding were estimated from the temperature dependence of the off-rate in solution. Loading rate-dependent unbinding forces were determined for single molecules by atomic force microscopy, which extrapolated at zero force to a value close to the off-rate measured in solution, without any indication for multiple transition states. The measured unbinding forces of all nine mutants correlated well with the off-rate in solution, but not with the temperature dependence of the reaction, indicating that the same transition state must be crossed in spontaneous and forced unbinding and that the unbinding path under load cannot be too different from the one at zero force. The distance of the transition state from the ground state along the unbinding pathway is directly proportional to the barrier height, regardless of the details of the binding site, which most likely reflects the elasticity of the protein in the unbinding process. Atomic force microscopy thus can be a valuable tool for the characterization of solution properties of protein-ligand systems at the single molecule level, predicting relative off-rates, potentially of great value for combinatorial chemistry and biology.
Proceedings of the National Academy of Sciences
2000
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-bipr-364
https://pub.uni-bielefeld.de/record/1773241
https://pub.uni-bielefeld.de/download/1773241/2311215
eng
info:eu-repo/semantics/altIdentifier/issn/0027-8424
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1773250
2018-07-24T12:59:15Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Soft, entirely photoplastic probes for scanning force microscopy
Genolet, Grégoire
Brugger, Jürgen
Despont, Michel
Drechsler, Ute
Vettiger, Peter
Rooij, Nico F. de
Anselmetti, Dario ; https://orcid.org/0000-0002-8720-4369
ddc:530
Genolet G, Brugger J, Despont M, et al. Soft, entirely photoplastic probes for scanning force microscopy. <em>Review of scientific instruments</em>. 1999;70(5):2398-2401.
A new probe made entirely of plastic material has been developed for scanning probe microscopy. Using a polymer for the cantilever facilitates the realization of mechanical properties that are difficult to achieve with classical silicon technology. The new cantilever and tip presented here are made of an epoxy-based photoplastic. The fabrication process is a simple batch process in which the integrated tip and the lever are defined in one photolithography step. The simplicity of the fabrication step, the use of a polymer as material, and the ability to reuse the silicon mold lead to a soft low-cost probe for scanning force microscopy. Imaging soft condensed matter with photoplastic levers, which uses laser beam deflection sensing, exhibits a resolution that compares well with that of commercially available silicon cantilevers.
AIP Publishing
1999
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17732504
https://pub.uni-bielefeld.de/record/1773250
https://pub.uni-bielefeld.de/download/1773250/2311216
eng
info:eu-repo/semantics/altIdentifier/doi/10.1063/1.1149767
info:eu-repo/semantics/altIdentifier/issn/0034-6748
info:eu-repo/semantics/altIdentifier/wos/000080113600031
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1773258
2018-07-24T12:58:58Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Sub-micron grating formation in Ta2O5-waveguides by femtosecond UV-laser ablation
Beinhorn, Frank
Ihlemann, Jürgen
Simon, Peter
Marowsky, Gerd
Maisenhölder, Bernd
Edlinger, Johannes
Neuschäfer, Dieter
Anselmetti, Dario ; https://orcid.org/0000-0002-8720-4369
Femtosecond laser
Micro patterning
Laser ablation
Grating
ddc:530
Beinhorn F, Ihlemann J, Simon P, et al. Sub-micron grating formation in Ta2O5-waveguides by femtosecond UV-laser ablation. <em>Applied surface science</em>. 1999;138-139:107-110.
Sub-micron-period surface gratings on Ta2O5 waveguide layers were produced by ablation with a sub-ps-UV-laser. The structure is generated by projection imaging of a primary transmission grating mask. A grating of 500 nm period with a surface modulation depth of 10 nm on a sample area of about 300 µm × 300 µm can be produced with a single laser pulse of about 100 mJ/cm² at 248 nm. Adjustment of the modulation depth to specific requirements can be accomplished by varying laser fluence or pulse number. The structures can be used as grating couplers.
Elsevier BV
1999
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17732585
https://pub.uni-bielefeld.de/record/1773258
https://pub.uni-bielefeld.de/download/1773258/2311217
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/S0169-4332(98)00390-0
info:eu-repo/semantics/altIdentifier/issn/0169-4332
info:eu-repo/semantics/altIdentifier/wos/000078576400021
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1773267
2018-07-24T12:59:15Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Force-mediated kinetics of single P-selectin/ligand complexes observed by atomic force microscopy
Fritz, Jürgen
Katopodis, Andreas G.
Kolbinger, Frank
Anselmetti, Dario ; https://orcid.org/0000-0002-8720-4369
ddc:530
Fritz J, Katopodis AG, Kolbinger F, Anselmetti D. Force-mediated kinetics of single P-selectin/ligand complexes observed by atomic force microscopy. <em>Proceedings of the National Academy of Sciences of the United States of America</em>. 1998;95(21):12283-12288.
Leukocytes roll along the endothelium of postcapillary venules in response to inflammatory signals. Rolling under the hydrodynamic drag forces of blood flow is mediated by the interaction between selectins and their ligands across the leukocyte and endothelial cell surfaces. Here we present force-spectroscopy experiments on single complexes of P-selectin and P-selectin glycoprotein ligand-1 by atomic force microscopy to determine the intrinsic molecular properties of this dynamic adhesion process. By modeling intermolecular and intramolecular forces as well as the adhesion probability in atomic force microscopy experiments we gain information on rupture forces, elasticity, and kinetics of the P-selectin/P-selectin glycoprotein ligand-1 interaction. The complexes are able to withstand forces up to 165 pN and show a chain-like elasticity with a molecular spring constant of 5.3 pN nm -1 and a persistence length of 0.35 nm. The dissociation constant (off-rate) varies over three orders of magnitude from 0.02 s -1 under zero force up to 15 s -1 under external applied forces. Rupture force and lifetime of the complexes are not constant, but directly depend on the applied force per unit time, which is a product of the intrinsic molecular elasticity and the external pulling velocity. The high strength of binding combined with force-dependent rate constants and high molecular elasticity are tailored to support physiological leukocyte rolling.
Proceedings of the National Academy of Sciences
1998
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-bipr-395
https://pub.uni-bielefeld.de/record/1773267
https://pub.uni-bielefeld.de/download/1773267/2311218
eng
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1773271
2018-07-24T12:58:01Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Antigen binding forces of individually addressed single-chain Fv antibody molecules
Ros, Robert
Schwesinger, Falk
Anselmetti, Dario ; https://orcid.org/0000-0002-8720-4369
Kubon, Martina
Schäfer, Rolf
Plückthun, Andreas
Tiefenauer, Louis
ddc:530
Ros R, Schwesinger F, Anselmetti D, et al. Antigen binding forces of individually addressed single-chain Fv antibody molecules. <em>Proceedings of the National Academy of Sciences of the United States of America</em>. 1998;95(13):7402-7405.
Antibody single-chain Fv fragment (scFv) molecules that are specific for fluorescein have been engineered with a C-terminal cysteine for a directed immobilization on a flat gold surface. Individual scFv molecules can be identified by atomic force microscopy. For selected molecules the antigen binding forces are then determined by using a tip modified with covalently immobilized antigen. An scFv mutant of 12 percent lower free energy for ligand binding exhibits a statistically significant 20 percent lower binding force. This strategy of covalent immobilization and measuring well separated single molecules allows the characterization of ligand binding forces in molecular repertoires at the single molecule level and will provide a deeper insight into biorecognition processes.
Proceedings of the National Academy of Sciences
1998
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-bipr-403
https://pub.uni-bielefeld.de/record/1773271
https://pub.uni-bielefeld.de/download/1773271/2311219
eng
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1773278
2018-07-24T12:58:25Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Polyacrylamide-coated capillaries probed by atomic force microscopy: correlation between surface topography and electrophoretic performance
Cifuentes, Alejandro
Diez-Masa, José C.
Fritz, Jürgen
Anselmetti, Dario ; https://orcid.org/0000-0002-8720-4369
Bruno, Alfredo E.
ddc:530
Cifuentes A, Diez-Masa JC, Fritz J, Anselmetti D, Bruno AE. Polyacrylamide-coated capillaries probed by atomic force microscopy: correlation between surface topography and electrophoretic performance. <em>Analytical chemistry</em>. 1998;70(16):3458-3462.
The inner wall surface topography of fused silica capillaries with an inner diameter of 50 µm, coated with linear polyacrylamide layers of different quality, was investigated by atomic force microscopy (AFM). After electropherograms were recorded of a synthetic mixture of proteins in a capillary having a given coating, the capillary was fragmented into many small pieces, and some of the fragments whose inner surface was easy to access by the cantilever were randomly selected and probed by AFM. A correlation between coating quality and capillary electrophoresis (CE) performance was observed. A comparison between both CE and AFM data from the same capillary indicates that those capillaries having zones with nonhomogeneous coatings, i.e., those having higher surface roughness, give poorer CE separation performances than those with a homogeneous polyacrylamide coating. The polymeric coating of these later capillaries showed typical thickness values of a few nanometers. The reduced CE performance observed in those capillaries with higher roughness is probably associated with the noxious adsorption of proteins directly onto the bare or thinly coated inner wall of the fused silica capillaries.
American Chemical Society (ACS)
1998
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17732784
https://pub.uni-bielefeld.de/record/1773278
https://pub.uni-bielefeld.de/download/1773278/2311220
eng
info:eu-repo/semantics/altIdentifier/doi/10.1021/ac9801420
info:eu-repo/semantics/altIdentifier/issn/0003-2700
info:eu-repo/semantics/altIdentifier/issn/1520-6882
info:eu-repo/semantics/altIdentifier/wos/000075414600016
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1773284
2018-07-24T12:58:58Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Probing single biomolecules with atomic force microscopy
Fritz, Jürgen
Anselmetti, Dario ; https://orcid.org/0000-0002-8720-4369
Jarchow, Janina
Fernandez-Busquets, Xavier
ddc:530
Fritz J, Anselmetti D, Jarchow J, Fernandez-Busquets X. Probing single biomolecules with atomic force microscopy. <em>Journal of structural biology</em>. 1997;119(2):165-171.
During the last years, atomic force microscopy (AFM) has developed from a microscopy tool for solid state surface science towards a method employed in many scientific disciplines such as biology to investigate individual molecules on a nanometer scale. This article describes the current status of the imaging possibilities of AFM on RNA, IgG and gold-labelled cell adhesion molecules, as well as of measurements of intermolecular binding forces between biomolecules in order to investigate their molecular structure, function and elasticity.
Elsevier BV
1997
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17732842
https://pub.uni-bielefeld.de/record/1773284
https://pub.uni-bielefeld.de/download/1773284/2311221
eng
info:eu-repo/semantics/altIdentifier/doi/10.1006/jsbi.1997.3887
info:eu-repo/semantics/altIdentifier/issn/1047-8477
info:eu-repo/semantics/altIdentifier/wos/A1997XN38200012
info:eu-repo/semantics/altIdentifier/pmid/9245757
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1773289
2018-07-24T12:58:58Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Specific antigen/antibody interactions measured by force microscopy
Dammer, Ulrich
Hegner, Martin
Anselmetti, Dario ; https://orcid.org/0000-0002-8720-4369
Wagner, Peter
Dreier, Markus
Huber, Walter
Güntherodt, Hans-Joachim
ddc:530
Dammer U, Hegner M, Anselmetti D, et al. Specific antigen/antibody interactions measured by force microscopy. <em>Biophysical journal</em>. 1996;70(5):2437-2441.
Molecular recognition between biotinylated bovine serum albumin and polyclonal, biotin-directed IgG antibodies has been measured directly under various buffer conditions using an atomic force microscope (AFM). It was found that even highly structured molecules such as IgG antibodies preserve their specific affinity to their antigens when probed with an AFM in the force mode. Evidence that only a very limited number (less than 10) antibody/antigen pairs contribute to the measured interaction force is given. The potential and limitations of this new approach for the measurement of individual antigen/antibody interactions, and some possible applications are discussed.
Elsevier BV
1996
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-bipr-438
https://pub.uni-bielefeld.de/record/1773289
https://pub.uni-bielefeld.de/download/1773289/2311222
eng
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1773296
2018-07-24T12:58:58Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Binding strength between cell adhesion proteoglycans measured by atomic force microscopy
Dammer, Ulrich
Popescu, Octavian
Wagner, Peter
Anselmetti, Dario ; https://orcid.org/0000-0002-8720-4369
Güntherodt, Hans-Joachim
Misevic, Gradimir N.
ddc:530
Dammer U, Popescu O, Wagner P, Anselmetti D, Güntherodt H-J, Misevic GN. Binding strength between cell adhesion proteoglycans measured by atomic force microscopy. <em>Science</em>. 1995;267(5201):1173-1175.
Measurement of binding forces intrinsic to adhesion molecules is necessary to assess their contribution to the maintenance of the anatomical integrity of multicellular organisms. Atomic force microscopy was used to measure the binding strength between cell adhesion proteoglycans from a marine sponge. Under physiological conditions, the adhesive force between two cell adhesion molecules was found to be up to 400 piconewtons. Thus a single pair of molecules could hold the weight of 1600 cells. High intermolecular binding forces are likely to form the basis or the integrity of the multicellular sponge organism.
American Association For The Advancement Of Science (Aaas)
1995
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-bipr-444
https://pub.uni-bielefeld.de/record/1773296
https://pub.uni-bielefeld.de/download/1773296/2311223
eng
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1773587
2018-07-24T12:58:58Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Stand-alone device for the electrolytic fabrication of scanning near-field optical microscopy aperture probes
Haumann, Carola
Pelargus, Christoph
Frey, Heinrich G.
Ros, Robert
Anselmetti, Dario ; https://orcid.org/0000-0002-8720-4369
Toquant, Julien
Pohl, Dieter W.
ddc:530
Haumann C, Pelargus C, Frey HG, et al. Stand-alone device for the electrolytic fabrication of scanning near-field optical microscopy aperture probes. <em>Review of scientific instruments</em>. 2005;76(3): 033704.
Near-field optical applications require the fast, stable, and reproducible fabrication of scanning near-field optical microscopy (SNOM) aperture probes in the submicrometer range. We have developed a stand-alone device for the electrolytic etching of nanoapertures with an integrated current and optical transmission monitoring and control. Probes with an aperture ranging from 50 to 100 nm were reproducibly fabricated with great reliability. With these probes, high resolution SNOM images of 100 nm test patterns and single dye molecules (Rhodamine 6G in poly(vinyl alcohol)) are measured and presented. Not requiring a SNOM setup, the stand-alone device is not only inexpensive and compact, but also insensitive to external disturbances.
AIP Publishing
2005
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17735876
https://pub.uni-bielefeld.de/record/1773587
https://pub.uni-bielefeld.de/download/1773587/2311293
eng
info:eu-repo/semantics/altIdentifier/doi/10.1063/1.1866253
info:eu-repo/semantics/altIdentifier/issn/0034-6748
info:eu-repo/semantics/altIdentifier/wos/000227530200022
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1773848
2018-07-24T12:58:25Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
The initial step of DNA hairpin folding: a kinetic analysis using fluorescence correlation spectroscopy
Kim, Jiho
Doose, Sören
Neuweiler, Hannes
Sauer, Markus
ddc:530
Kim J, Doose S, Neuweiler H, Sauer M. The initial step of DNA hairpin folding: a kinetic analysis using fluorescence correlation spectroscopy. <em>Nucleic Acids Research</em>. 2006;34(9):2516-2527.
Conformational fluctuations of single-stranded DNA (ssDNA) oligonucleotides were studied in aqueous solution by monitoring contact-induced fluorescence quenching of the oxazine fluorophore MR121 by intrinsic guanosine residues (dG). We applied fluorescence correlation spectroscopy as well as steady-state and time-resolved fluorescence spectroscopy to analyze kinetics of DNA hairpin folding. We first characterized the reporter system by investigating bimolecular quenching interactions between MR121 and guanosine monophosphate in aqueous solution estimating rate constants, efficiency and stability for formation of quenched complexes. We then studied the kinetics of complex formation between MR121 and dG residues site-specifically incorporated in DNA hairpins. To uncover the initial steps of DNA hairpin folding we investigated complex formation in ssDNA carrying one or two complementary base pairs (dC–dG pairs) that could hybridize to form a short stem. Our data show that incorporation of a single dC–dG pair leads to non-exponential decays for opening and closing kinetics and reduces rate constants by one to two orders of magnitude. We found positive activation enthalpies independent of the number of dC–dG pairs. These results imply that the rate limiting step of DNA hairpin folding is not determined by loop dynamics, or by mismatches in the stem, but rather by interactions between stem and loop nucleotides.
Oxford University Press (OUP)
2006
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17738488
https://pub.uni-bielefeld.de/record/1773848
https://pub.uni-bielefeld.de/download/1773848/2311328
https://pub.uni-bielefeld.de/download/1773848/2311329
eng
info:eu-repo/semantics/altIdentifier/doi/10.1093/nar/gkl221
info:eu-repo/semantics/altIdentifier/issn/0305-1048
info:eu-repo/semantics/altIdentifier/issn/1362-4962
info:eu-repo/semantics/altIdentifier/wos/000238763700012
info:eu-repo/semantics/altIdentifier/pmid/16687657
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775555
2018-07-24T12:59:35Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Experimental symmetry analysis of energy bands near critical points in Pt using spin- and momentum-resolved photoemission
Oepen, H. P.
Hünlich, K.
Kirschner, J.
Eyers, A.
Schäfers, F.
Schönhense, G.
Heinzmann, Ulrich
ddc:530
Oepen HP, Hünlich K, Kirschner J, et al. Experimental symmetry analysis of energy bands near critical points in Pt using spin- and momentum-resolved photoemission. <em>Physical Review B: Condensed Matter and Materials Physics</em>. 1985;31(10):6846-6848.
A theoretical discrepancy concerning band crossings at two points along the Lambda direction in Pt is clarified by experimental symmetry analysis of the band characteristics, using circularly polarized synchrotron radiation and spin analysis of the photoelectrons by a new low-energy-diffraction analyzer system. Each of the theoretical results is found to be correct at one k point and incorrect at the other one.
American Physical Society (APS)
1985
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17755550
https://pub.uni-bielefeld.de/record/1775555
https://pub.uni-bielefeld.de/download/1775555/2311956
eng
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.31.6846
info:eu-repo/semantics/altIdentifier/issn/0163-1829
info:eu-repo/semantics/altIdentifier/wos/A1985AHU4700097
info:eu-repo/semantics/altIdentifier/pmid/9935584
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775563
2018-07-24T12:58:03Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
A rotatable electron spectrometer system for spin- and angle-resolved photoemission experiments with circularly polarized synchrotron radiation
Heckenkamp, Ch.
Eyers, A.
Schäfers, F.
Schönhense, G.
Heinzmann, Ulrich
ddc:530
Heckenkamp C, Eyers A, Schäfers F, Schönhense G, Heinzmann U. A rotatable electron spectrometer system for spin- and angle-resolved photoemission experiments with circularly polarized synchrotron radiation. <em>Nuclear Instruments and Methods in Physics Research A: Accelerators, Spectrometers, Detectors and Associated Equipment</em>. 1986;246(1-3):500-503.
An electron-optical system is described which has been especially designed for spin- and angle-resolved photoelectron spectroscopy with circularly polarized synchrotron radiation. One hv- and one uhv-type of this system (for studies at atoms/molecules and solids/adsorbates, respectively) are in operation at the storage ring BESSY. The system employs, thus, a light source and an electron spin detector (high energy Mott detector) both fixed in space. This is realized by a rotatable electron spectrometer and a 90° deflector by which the electron beam is directed along the axis of rotation of the spectrometer, independent of the emission angle chosen.
Elsevier BV
1986
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17755639
https://pub.uni-bielefeld.de/record/1775563
https://pub.uni-bielefeld.de/download/1775563/2311957
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/0168-9002(86)90139-7
info:eu-repo/semantics/altIdentifier/issn/0168-9002
info:eu-repo/semantics/altIdentifier/wos/A1986C799900108
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775569
2018-07-24T12:59:00Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
High-flux normal incidence monochromator for circularly polarized synchrotron radiation
Schäfers, F.
Peatman, W.
Eyers, A.
Heckenkamp, Ch.
Schönhense, G.
Heinzmann, Ulrich
ddc:530
Schäfers F, Peatman W, Eyers A, Heckenkamp C, Schönhense G, Heinzmann U. High-flux normal incidence monochromator for circularly polarized synchrotron radiation. <em>Review of Scientific Instruments</em>. 1986;57(6):1032-1041.
AIP Publishing
1986
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17755692
https://pub.uni-bielefeld.de/record/1775569
https://pub.uni-bielefeld.de/download/1775569/2311958
eng
info:eu-repo/semantics/altIdentifier/doi/10.1063/1.1138655
info:eu-repo/semantics/altIdentifier/issn/0034-6748
info:eu-repo/semantics/altIdentifier/wos/A1986C598700002
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775576
2018-07-24T12:59:00Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Experimental characterization of the Xe 5p photoionization by angle- and spin-resolved photoelectron spectroscopy
Heckenkamp, Ch.
Schäfers, F.
Schönhense, G.
Heinzmann, Ulrich
ddc:530
Heckenkamp C, Schäfers F, Schönhense G, Heinzmann U. Experimental characterization of the Xe 5p photoionization by angle- and spin-resolved photoelectron spectroscopy. <em>Zeitschrift für Physik D: Atoms, Molecules and Clusters</em>. 1986;2(4):257-274.
Spin- and angle-resolved photoelectron spectroscopy with elliptically polarized radiation has been used to fully characterize the dynamics of photoelectron emission from free Xe atoms in the 5p-autoionization and continuum region. An advantageous reaction geometry and its experimental realization at the storage ring BESSY are discussed. The three independent experimental parameters which characterize the angular dependence of the photoelectron spin-polarization vector are reported for the wavelength range from 100nm to 40 nm. The results are compared with theoretical predictions based on RRPA-, RPAE- and semiempirical MQDT-calculations. The combination of existing data for the differential photoionization cross section with the spinpolarization parameters is used to completely decouple the photoionization channels: The transition matrix elements and their relative phases are determined separately for every single dissociation channel. The results are discussed in the context of the MQDT. Correlation effects and the influence of spin-orbit interaction on the continuum states most clearly show up when the Dill-Fano angular-momentum-transfer formalism is applied.
Springer Science and Business Media LLC
1986
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17755761
https://pub.uni-bielefeld.de/record/1775576
https://pub.uni-bielefeld.de/download/1775576/2311959
eng
info:eu-repo/semantics/altIdentifier/doi/10.1007/BF01426231
info:eu-repo/semantics/altIdentifier/issn/0178-7683
info:eu-repo/semantics/altIdentifier/issn/1434-6079
info:eu-repo/semantics/altIdentifier/wos/A1986D832800002
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775581
2018-07-24T12:59:35Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Angle-, Energy- and Spin-Resolved Photoelectron Emission Using Circularly Polarized Synchrotron Radiation
Heinzmann, Ulrich
ddc:530
Heinzmann U. Angle-, Energy- and Spin-Resolved Photoelectron Emission Using Circularly Polarized Synchrotron Radiation. <em>Physica Scripta</em>. 1987;T17:77-88.
With the development of BESSY a light source of circularly polarized vuv radiation with sufficiently high intensity has become available to make angle- and energy-resolved photoelectron spin-polarization studies with circularly polarized radiation feasible. This paper reviews the recent experimental activities performed with free atoms, physisorbed adsorbates and solid surfaces (metals as well insulator) in the past three years. The spin-polarization of photoelectrons measured under certain conditions to be almost complete studies atomic effects as auto-ionization resonances in the gas phase as well as even in the photo-emission of adsorbates. The cross comparison of photoemission data from Xe in its different structural phases (free atom, adsorbate in different structures and on different substrates, three dimensional crystal) yields symmetry characterizations of the electronic states (assignment of quantum numbers, determination of dipole matrix elements and phase shifts; spin resolved band mapping) and shows the ability of spin-polarization spectroscopy to build a bridge between atomic and surface physics.
IOP Publishing
1987
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17755818
https://pub.uni-bielefeld.de/record/1775581
https://pub.uni-bielefeld.de/download/1775581/2311960
eng
info:eu-repo/semantics/altIdentifier/doi/10.1088/0031-8949/1987/T17/009
info:eu-repo/semantics/altIdentifier/issn/0031-8949
info:eu-repo/semantics/altIdentifier/issn/1402-4896
info:eu-repo/semantics/altIdentifier/wos/A1987J117300010
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775583
2018-07-24T12:59:00Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Electronic Resonances in Rare-Gas Adsorbates Observed by Spin-Resolved Electron Spectroscopy
Schönhense, G.
Kessler, B.
Müller, Norbert
Schmiedeskamp, B.
Heinzmann, Ulrich
ddc:530
Schönhense G, Kessler B, Müller N, Schmiedeskamp B, Heinzmann U. Electronic Resonances in Rare-Gas Adsorbates Observed by Spin-Resolved Electron Spectroscopy. <em>Physica Scripta</em>. 1987;35(4):541-546.
IOP Publishing
1987
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17755830
https://pub.uni-bielefeld.de/record/1775583
https://pub.uni-bielefeld.de/download/1775583/2311961
eng
info:eu-repo/semantics/altIdentifier/doi/10.1088/0031-8949/35/4/024
info:eu-repo/semantics/altIdentifier/issn/0031-8949
info:eu-repo/semantics/altIdentifier/issn/1402-4896
info:eu-repo/semantics/altIdentifier/wos/A1987H012900024
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775588
2018-07-24T12:59:00Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Spin-Polarization Measurements in the Autoionization Region of Mercury
Müller, M.
Schäfers, F.
Böwering, N.
Heckenkamp, Ch.
Heinzmann, Ulrich
ddc:530
Müller M, Schäfers F, Böwering N, Heckenkamp C, Heinzmann U. Spin-Polarization Measurements in the Autoionization Region of Mercury. <em>Physica Scripta</em>. 1987;35(4):459-462.
IOP Publishing
1987
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17755881
https://pub.uni-bielefeld.de/record/1775588
https://pub.uni-bielefeld.de/download/1775588/2311962
eng
info:eu-repo/semantics/altIdentifier/doi/10.1088/0031-8949/35/4/008
info:eu-repo/semantics/altIdentifier/issn/0031-8949
info:eu-repo/semantics/altIdentifier/issn/1402-4896
info:eu-repo/semantics/altIdentifier/wos/A1987H012900008
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775599
2019-03-27T13:15:46Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Fitting ordinary differential equations to chaotic data
Baake, Ellen
Baake, Michael
Bock, H. G.
Briggs, K. M.
ddc:530
Baake E, Baake M, Bock HG, Briggs KM. Fitting ordinary differential equations to chaotic data. <em>Physical Review A</em>. 1992;45(8):5524-5529.
We address the problem of estimating parameters in systems of ordinary differential equations which give rise to chaotic time series. We claim that the problem is naturally tackled by boundary value problem methods. The power of this approach is demonstrated by various examples with ideal as well as noisy data. In particular, Lyapunov exponents can be computed accurately from time series much shorter than those required by previous methods.
American Physical Society (APS)
1992
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17755994
https://pub.uni-bielefeld.de/record/1775599
https://pub.uni-bielefeld.de/download/1775599/2311965
eng
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevA.45.5524
info:eu-repo/semantics/altIdentifier/issn/1050-2947
info:eu-repo/semantics/altIdentifier/issn/1094-1622
info:eu-repo/semantics/altIdentifier/wos/A1992HQ03800031
info:eu-repo/semantics/altIdentifier/pmid/9907650
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775603
2019-03-27T13:15:31Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
On the role of invariants for the parameter estimation problem in Hamiltonian systems
Baake, Michael
Baake, Ellen
Eich, E.
ddc:530
Baake M, Baake E, Eich E. On the role of invariants for the parameter estimation problem in Hamiltonian systems. <em>Physics letters</em>. 1993;180(1-2):74-82.
The parameter estimation problem is discussed for differential equations that describe a Hamiltonian system. Since the conserved total energy is an invariant which contains all parameters of the system, we can achieve parameter estimation without any numerical integration. This is demonstrated for data in the chaotic region of the Hénon-Heiles system and of the planar double pendulum. We show that the method works well for ideal as well as noisy data. In this context, an appropriate method for the generation of reliable time series in the presence of an invariant is discussed. Finally, it is shown that our method also provides a simple approach to global fitting in discrete dynamical systems with invariants.
Elsevier BV
1993
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17756036
https://pub.uni-bielefeld.de/record/1775603
https://pub.uni-bielefeld.de/download/1775603/2311966
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/0375-9601(93)90497-N
info:eu-repo/semantics/altIdentifier/issn/0375-9601
info:eu-repo/semantics/altIdentifier/wos/A1993LV97300014
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775606
2018-07-24T12:59:35Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Spin-resolved photoemission from Ir(111): Transitions into a secondary band and energetic position of the final state bands
Müller, Norbert
Kessler, B.
Schmiedeskamp, B.
Schönhense, G.
Heinzmann, Ulrich
ddc:530
Müller N, Kessler B, Schmiedeskamp B, Schönhense G, Heinzmann U. Spin-resolved photoemission from Ir(111): Transitions into a secondary band and energetic position of the final state bands. <em>Solid State Communications</em>. 1987;61(3):187-192.
Elsevier BV
1987
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17756065
https://pub.uni-bielefeld.de/record/1775606
https://pub.uni-bielefeld.de/download/1775606/2311967
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/0038-1098(87)90027-5
info:eu-repo/semantics/altIdentifier/issn/0038-1098
info:eu-repo/semantics/altIdentifier/wos/A1987F535200008
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775611
2018-07-24T12:58:27Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Spin-resolved photoemission from Pd(111)
Schmiedeskamp, B.
Kessler, B.
Müller, Norbert
Schönhense, G.
Heinzmann, Ulrich
ddc:530
Schmiedeskamp B, Kessler B, Müller N, Schönhense G, Heinzmann U. Spin-resolved photoemission from Pd(111). <em>Solid State Communications</em>. 1988;65(7):665-670.
Elsevier BV
1988
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17756111
https://pub.uni-bielefeld.de/record/1775611
https://pub.uni-bielefeld.de/download/1775611/2311968
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/0038-1098(88)90360-2
info:eu-repo/semantics/altIdentifier/issn/0038-1098
info:eu-repo/semantics/altIdentifier/wos/A1988M052600025
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775616
2018-07-24T12:58:27Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
A source of polarized electrons
Baum, Günter
Koch, U.
ddc:530
Baum G, Koch U. A source of polarized electrons. <em>Nucl.Instrum.Methods</em>. 1969;71(2):189-195.
Elsevier BV
1969
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-bipr-9461
https://pub.uni-bielefeld.de/record/1775616
https://pub.uni-bielefeld.de/download/1775616/2311969
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/0029-554X(69)90011-1
info:eu-repo/semantics/altIdentifier/issn/0029-554X
info:eu-repo/semantics/altIdentifier/wos/A1969D630300011
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775620
2018-07-24T12:59:35Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Spin-orbit perturbation in heavy alkali atoms
Baum, Günter
Lubell, M. S.
Raith, Wilhelm
ddc:530
Baum G, Lubell MS, Raith W. Spin-orbit perturbation in heavy alkali atoms. <em>Phys.Rev.Lett.</em> 1970;25(5):267-270.
In a photoionization experiment involving polarized alkali atoms and circularly polarized photons we measured the strength of the spin-orbit perturbation in potassium, rubidium, and cesium. Our results are pertinent to the theory of photoionization and to the production of polarized electrons. Extrapolation of the results to photon energies below the ionization threshold provides access to the anomalous doublet line-strength ratio of discrete P states.
American Physical Society (APS)
1970
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17756202
https://pub.uni-bielefeld.de/record/1775620
https://pub.uni-bielefeld.de/download/1775620/2311971
eng
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevLett.25.267
info:eu-repo/semantics/altIdentifier/issn/0031-9007
info:eu-repo/semantics/altIdentifier/wos/A1970G943300002
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775634
2018-07-24T12:59:00Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Measurement of the spin-orbit perturbation in the P-state continuum of heavy alkali-metal atoms : K, Rb, and Cs
Baum, Günter
Lubell, M. S.
Raith, Wilhelm
ddc:530
Baum G, Lubell MS, Raith W. Measurement of the spin-orbit perturbation in the P-state continuum of heavy alkali-metal atoms : K, Rb, and Cs. <em>Phys.Rev. A</em>. 1972;5(3):1073-1087.
The spin-orbit interaction for the P-state continuum of heavy alkali metals was investigated in a photoionization experiment using spin-polarized alkali atoms and circularly polarized light. From the asymmetry in ion-counting rates corresponding to the two photon helicities, Fano's spin-orbit perturbation parameter x was determined over a range of several hundred angstroms for K, Rb, and Cs. The spin-orbit perturbation was found to increase from K to Rb to Cs as expected, and the nonlinear behavior of x as a function of the photon energy E was demonstrated for K. Knowledge of x(E) was used to establish accurate values for the position of the Cooper minimum and to estimate the magnitude of the cross section at the minimum. In addition, the x(E) data for Cs were used to gain information about the spin polarization of photoelectrons in a Fano-type polarized electron source. Finally, extrapolation of x(E) for cesium into the discrete spectrum indicated the existence of a pole in the function Rho (E) which corresponds to the doublet line-strength ratio Rho (EnP)=S(nP3/2)/S(nP1/2) at the discrete energies EnP. According to our extrapolation, the pole lies in the region of n=10 to 15, in agreement with the early spectroscopic work of Sambursky (1928) and Beutell (1939), whose measurements were discounted by later investigators.
American Physical Society (APS)
1972
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17756349
https://pub.uni-bielefeld.de/record/1775634
https://pub.uni-bielefeld.de/download/1775634/2311977
eng
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevA.5.1073
info:eu-repo/semantics/altIdentifier/issn/0556-2791
info:eu-repo/semantics/altIdentifier/wos/A1972L975600011
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775638
2018-07-24T12:58:03Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Energy dependence of the electron spin polarisation parameters for Hg 5d photoionisation with circularly polarised light
Schäfers, F.
Heckenkamp, Ch.
Schönhense, G.
Heinzmann, Ulrich
ddc:530
Schäfers F, Heckenkamp C, Schönhense G, Heinzmann U. Energy dependence of the electron spin polarisation parameters for Hg 5d photoionisation with circularly polarised light. <em>Journal of Physics B: Atomic, Molecular and Optical Physics</em>. 1988;21(5):769-774.
Circularly polarised VUV radiation from the storage ring BESSY was used to measure all three spin polarisation parameters of photoelectrons from the Hg 5d shell in the photon energy range from threshold to approximately 35 eV. The experimental results are compared with theoretical calculations in the relativistic and non-relativistic random-phase-approximation scheme (RRPA and RPAE respectively) and Dirac-Slater (DS) calculations. A discussion of the influence of relativistic and potential barrier effects on the experimental data is given.
IOP Publishing
1988
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17756383
https://pub.uni-bielefeld.de/record/1775638
https://pub.uni-bielefeld.de/download/1775638/2311978
eng
info:eu-repo/semantics/altIdentifier/doi/10.1088/0953-4075/21/5/008
info:eu-repo/semantics/altIdentifier/issn/0953-4075
info:eu-repo/semantics/altIdentifier/issn/1361-6455
info:eu-repo/semantics/altIdentifier/wos/A1988M520100008
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775643
2018-07-24T12:59:17Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Angle- and spin-resolved photoelectron spectroscopy of the 4f subshell in atomic ytterbium
Svensson, A.
Müller, M.
Böwering, N.
Heinzmann, Ulrich
Radojevic, V.
Wijesundera, W.
ddc:530
Svensson A, Müller M, Böwering N, Heinzmann U, Radojevic V, Wijesundera W. Angle- and spin-resolved photoelectron spectroscopy of the 4f subshell in atomic ytterbium. <em>Journal of Physics B: Atomic, Molecular and Optical Physics</em>. 1988;21(8):L179-L185.
The spin polarisation components of photoelectrons from atomic ytterbium have been measured over the photon energy range from 15.5 to 22.5 eV. The measurements were performed by making use of circularly polarised synchrotron radiation from the storage ring BESSY in conjunction with an angle-resolved electron spectrometer. Theoretical predictions based on the relativistic random-phase approximation (RRPA) are in fair agreement with the experimental data even though a certain offset between theory and experiment exists.
IOP Publishing
1988
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17756438
https://pub.uni-bielefeld.de/record/1775643
https://pub.uni-bielefeld.de/download/1775643/2311979
eng
info:eu-repo/semantics/altIdentifier/doi/10.1088/0953-4075/21/8/002
info:eu-repo/semantics/altIdentifier/issn/0953-4075
info:eu-repo/semantics/altIdentifier/issn/1361-6455
info:eu-repo/semantics/altIdentifier/wos/A1988N291100002
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775650
2018-07-24T12:59:17Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Angular distribution of photoelectrons ejected from HI by polarised coherent VUV radiation
Mank, A.
Drescher, Markus
Huth-Fehre, T.
Schönhense, G.
Böwering, N.
Heinzmann, Ulrich
ddc:530
Mank A, Drescher M, Huth-Fehre T, Schönhense G, Böwering N, Heinzmann U. Angular distribution of photoelectrons ejected from HI by polarised coherent VUV radiation. <em>Journal of Physics, B: Atomic, Molecular and Optical Physics</em>. 1989;22(17):L487-L491.
IOP Publishing
1989
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17756508
https://pub.uni-bielefeld.de/record/1775650
https://pub.uni-bielefeld.de/download/1775650/2311981
eng
info:eu-repo/semantics/altIdentifier/doi/10.1088/0953-4075/22/17/003
info:eu-repo/semantics/altIdentifier/issn/0953-4075
info:eu-repo/semantics/altIdentifier/wos/A1989AQ22900003
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775658
2018-07-24T12:59:00Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Influence of autoionisation and predissociation on the photoelectron parameters in HBr
Lefebvre-Brion, H.
Salzmann, M.
Klausing, H.-W.
Müller, M.
Böwering, N.
Heinzmann, Ulrich
ddc:530
Lefebvre-Brion H, Salzmann M, Klausing H-W, Müller M, Böwering N, Heinzmann U. Influence of autoionisation and predissociation on the photoelectron parameters in HBr. <em>Journal of Physics B: Atomic, Molecular and Optical Physics</em>. 1989;22(23):3891-3900.
IOP Publishing
1989
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17756582
https://pub.uni-bielefeld.de/record/1775658
https://pub.uni-bielefeld.de/download/1775658/2311983
eng
info:eu-repo/semantics/altIdentifier/doi/10.1088/0953-4075/22/23/012
info:eu-repo/semantics/altIdentifier/issn/0953-4075
info:eu-repo/semantics/altIdentifier/wos/A1989CD55500012
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775669
2018-07-24T12:58:03Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Angle- and spin-resolved photoelectron spectroscopy in the region of the 6s6p(2) autoionisation of Tl
Müller, M.
Böwering, N.
Svensson, A.
Heinzmann, Ulrich
ddc:530
Müller M, Böwering N, Svensson A, Heinzmann U. Angle- and spin-resolved photoelectron spectroscopy in the region of the 6s6p(2) autoionisation of Tl. <em>Journal of Physics B: Atomic, Molecular and Optical Physics</em>. 1990;23(13):2267S-2275S.
An angle-, energy- and spin-resolved photoionisation experiment was performed in the region of the 6s6p(2)autoionisation resonances of thallium. Using monochromatic circularly polarised synchrotron radiation the energy dependence of the spin-polarisation parameters A, xi and alpha and the angular asymmetry parameter beta of the differential cross section were determined. In the wavelength region investigated these dynamical parameters show a pronounced variation which agrees well with the results of the random phase approximation with exchange' calculation by Cherepkov (1980). A detailed discussion of the resonance behaviour for the autoionising states is given in terms of dipole-matrix elements and phaseshift differences which are extracted from the experimental data.
IOP Publishing
1990
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17756693
https://pub.uni-bielefeld.de/record/1775669
https://pub.uni-bielefeld.de/download/1775669/2311987
eng
info:eu-repo/semantics/altIdentifier/doi/10.1088/0953-4075/23/13/018
info:eu-repo/semantics/altIdentifier/issn/0953-4075
info:eu-repo/semantics/altIdentifier/issn/1361-6455
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775673
2018-07-24T12:58:27Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Photoelectron angular distributions from laser-excited aligned Yb atoms ionized by vacuum ultraviolet radiation
Kerling, C.
Böwering, N.
Heinzmann, Ulrich
ddc:530
Kerling C, Böwering N, Heinzmann U. Photoelectron angular distributions from laser-excited aligned Yb atoms ionized by vacuum ultraviolet radiation. <em>Journal of Physics B: Atomic, Molecular and Optical Physics</em>. 1990;23(20):L629-L635.
IOP Publishing
1990
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17756730
https://pub.uni-bielefeld.de/record/1775673
https://pub.uni-bielefeld.de/download/1775673/2311988
eng
info:eu-repo/semantics/altIdentifier/doi/10.1088/0953-4075/23/20/003
info:eu-repo/semantics/altIdentifier/issn/0953-4075
info:eu-repo/semantics/altIdentifier/issn/1361-6455
info:eu-repo/semantics/altIdentifier/wos/A1990EF70100003
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775677
2018-07-24T12:59:00Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Angle-resolved measurements of the photoelectron spin polarization in the photoionization of HI molecules
Böwering, N.
Müller, M.
Salzmann, M.
Heinzmann, Ulrich
ddc:530
Böwering N, Müller M, Salzmann M, Heinzmann U. Angle-resolved measurements of the photoelectron spin polarization in the photoionization of HI molecules. <em>Journal of Physics B: Atomic, Molecular and Optical Physics</em>. 1991;24(22):4793-4801.
Using circularly polarized synchrotron radiation, the 5p pi ionization of HI molecules is studied by means of angle-resolved photoelectron spin polarization spectroscopy. The energy dependences of the dynamical photoionization parameters are obtained and compared with an ab initio calculation of Raseev et al. (1987) and the corresponding data for the xenon atom. Angular distributions of the polarization component A( Theta ) yield complete parameter sets. A strong influence of electronic autoionization is observed and analysed in terms of partial contributions using the additional information contained in the polarization results.
IOP Publishing
1991
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17756776
https://pub.uni-bielefeld.de/record/1775677
https://pub.uni-bielefeld.de/download/1775677/2311989
eng
info:eu-repo/semantics/altIdentifier/doi/10.1088/0953-4075/24/22/016
info:eu-repo/semantics/altIdentifier/issn/0953-4075
info:eu-repo/semantics/altIdentifier/issn/1361-6455
info:eu-repo/semantics/altIdentifier/wos/A1991GT19300016
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775681
2018-07-24T12:59:17Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Spin-resolved photoelectron spectroscopy of HBr in the resonance region of electron autoionization
Salzmann, M.
Böwering, N.
Klausing, H.-W.
Kuntze, R.
Heinzmann, Ulrich
ddc:530
Salzmann M, Böwering N, Klausing H-W, Kuntze R, Heinzmann U. Spin-resolved photoelectron spectroscopy of HBr in the resonance region of electron autoionization. <em>Journal of Physics B: Atomic, Molecular and Optical Physics</em>. 1994;27(10):1981-1992.
IOP Publishing
1994
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17756818
https://pub.uni-bielefeld.de/record/1775681
https://pub.uni-bielefeld.de/download/1775681/2311990
eng
info:eu-repo/semantics/altIdentifier/doi/10.1088/0953-4075/27/10/009
info:eu-repo/semantics/altIdentifier/issn/0953-4075
info:eu-repo/semantics/altIdentifier/issn/1361-6455
info:eu-repo/semantics/altIdentifier/wos/A1994NQ49500009
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775687
2018-07-24T12:59:35Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Soft X-ray spectrum of a laser-produced gallium plasma
Döhring, T.
Stiehler, J.
Böwering, N.
Heinzmann, Ulrich
ddc:530
Döhring T, Stiehler J, Böwering N, Heinzmann U. Soft X-ray spectrum of a laser-produced gallium plasma. <em>Journal of Physics B: Atomic, Molecular and Optical Physics</em>. 1994;27(19):L663-L669.
IOP Publishing
1994
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17756871
https://pub.uni-bielefeld.de/record/1775687
https://pub.uni-bielefeld.de/download/1775687/2311991
eng
info:eu-repo/semantics/altIdentifier/doi/10.1088/0953-4075/27/19/002
info:eu-repo/semantics/altIdentifier/issn/0953-4075
info:eu-repo/semantics/altIdentifier/issn/1361-6455
info:eu-repo/semantics/altIdentifier/wos/A1994PN01100002
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775692
2018-07-24T12:58:27Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Spin-resolved photoemission from Ag(111): Theory and experiment
Tamura, E.
Feder, Roland
Vogt, B.
Schmiedeskamp, B.
Heinzmann, Ulrich
ddc:530
Tamura E, Feder R, Vogt B, Schmiedeskamp B, Heinzmann U. Spin-resolved photoemission from Ag(111): Theory and experiment. <em>Zeitschrift für Physik B: Condensed Matter</em>. 1989;77(1):129-133.
Using circularly polarized synchrotron radiation between 14 and 24 eV, spin-resolved normal photoemission spectra have been measured from an unreconstructed Ag(111) surface. Corresponding spectra were calculated by means of a fully relativistic one-step theory of photoemission together with the bulk band structures for real and complex potentials, using two different local approximations for the exchange-correlation potential. Experiment and theory employing anX [alpha] potential agree well with regard to existence and positions of peaks. Relative peak heights match except for an observed enhancement at photon energies, at which two or more direct interband transitions may resonate.
Springer Science and Business Media LLC
1989
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17756928
https://pub.uni-bielefeld.de/record/1775692
https://pub.uni-bielefeld.de/download/1775692/2311992
eng
info:eu-repo/semantics/altIdentifier/doi/10.1007/BF01313629
info:eu-repo/semantics/altIdentifier/issn/0722-3277
info:eu-repo/semantics/altIdentifier/issn/1434-6036
info:eu-repo/semantics/altIdentifier/wos/A1989AR59900019
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775698
2018-07-24T12:59:17Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Spin-resolved photoemission from epitaxial Au layers on Pt(111): Coverage dependence of the bandstructure and evidence of surface resonances
Vogt, B.
Schmiedeskamp, B.
Heinzmann, Ulrich
ddc:530
Vogt B, Schmiedeskamp B, Heinzmann U. Spin-resolved photoemission from epitaxial Au layers on Pt(111): Coverage dependence of the bandstructure and evidence of surface resonances. <em>Zeitschrift für Physik B: Condensed Matter</em>. 1990;80(3):359-364.
Au/Pt(111) has been studied by spin-, angle- and energy-resolved photoemission with normal incident circularly polarized synchrotron radiation of BESSY and normal photoelectron emission for different Au coverages. The prepared layers were characterized by LEED and Augerelectron spectroscopy and turned out to grow up two dimensional and epitaxially. In the photoemission experiments the development of the 3-dimensional bandstructure in the Lambda-direction could be observed. For a coverage of 2.6 layers the highest occupied spin-orbit split bands are located at about 0.6 eV lower binding energy than the corresponding bands for a 3D-Au crystal and show dispersion which is, however, weaker than in a 3D-Au crystal. A 5 layer Au adsorbate was found to have already the same dispersion and energetic location as a Au(111)-crystal. For thick gold layers, which behave in photoemission like Au(111)-crystals, we find structures that cannot be due to direct transitions into a free electron like final band. The coverage dependence and spin polarization of these structures show that some of them are due to surface resonances, while the origin of one strong peak could not yet be explained conclusively. In addition we find strong hybridization and two avoided crossings in the occupied part of the bandstructure.
Springer Science and Business Media LLC
1990
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17756988
https://pub.uni-bielefeld.de/record/1775698
https://pub.uni-bielefeld.de/download/1775698/2311993
eng
info:eu-repo/semantics/altIdentifier/doi/10.1007/BF01323517
info:eu-repo/semantics/altIdentifier/issn/0722-3277
info:eu-repo/semantics/altIdentifier/issn/1434-6036
info:eu-repo/semantics/altIdentifier/wos/A1990DW31300007
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775702
2018-07-24T12:59:35Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Spin polarization in the photoemission from the 5d-core levels of a thallium film
Schmiedeskamp, B.
Vogt, B.
Heinzmann, Ulrich
ddc:530
Schmiedeskamp B, Vogt B, Heinzmann U. Spin polarization in the photoemission from the 5d-core levels of a thallium film. <em>Zeitschrift für Physik B: Condensed Matter</em>. 1993;90(2):197-200.
Springer Science and Business Media LLC
1993
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17757025
https://pub.uni-bielefeld.de/record/1775702
https://pub.uni-bielefeld.de/download/1775702/2311994
eng
info:eu-repo/semantics/altIdentifier/doi/10.1007/BF02198155
info:eu-repo/semantics/altIdentifier/issn/0722-3277
info:eu-repo/semantics/altIdentifier/issn/1434-6036
info:eu-repo/semantics/altIdentifier/wos/A1993KJ03600011
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775706
2018-07-24T12:59:17Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Coverage dependence of the spin-resolved photoemission from epitaxially grown Ag layers on Pt(111)
Schmiedeskamp, B.
Kessler, B.
Vogt, B.
Heinzmann, Ulrich
ddc:530
Schmiedeskamp B, Kessler B, Vogt B, Heinzmann U. Coverage dependence of the spin-resolved photoemission from epitaxially grown Ag layers on Pt(111). <em>Surface Science</em>. 1989;223(3):465-478.
Ag/Pt(111) has been studied by spin-, angle-, and energy-resolved photoemission with circularly polarized synchrotron radiation of BESSY for different Ag coverages. The prepared layers were characterized by AES and LEED and turned out to grow epitaxially. An independent layer thickness determination and some additional structure information were obtained from Rutherford backscattering studies in combination with channeling. The spin-resolved photoemission experiments were performed for normal incidence of circularly polarized light and normal emission of the photoelectrons. The spin information allowed a separation of spin-orbit split peaks of the Ag adsorbate layer and partly also a separation of Ag adsorbate peaks from the Pt substrate background intensity. This method-induced improved resolution was used to deduce information about the development of the Ag band structure in the [Lambda]-direction from the coverage dependence of spin-resolved photoemission spectra. Dispersion of occupied bands was found to be already almost completely developed for a three-layer system. Information about the development of the band structure in its unoccupied part was obtained from the resonant behavior of peaks at about 6 eV below EF. The resonant behavior is already observed for three Ag layers and increases with layer thickness. We observe a peak in the photoemission spectra contributing to the resonances which is not predicted by existing theoretical models.
Elsevier BV
1989
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17757061
https://pub.uni-bielefeld.de/record/1775706
https://pub.uni-bielefeld.de/download/1775706/2311995
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/0039-6028(89)90674-2
info:eu-repo/semantics/altIdentifier/issn/0039-6028
info:eu-repo/semantics/altIdentifier/wos/A1989CH64900013
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775711
2018-07-24T12:59:00Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Xe-adlayers on Pt(111) and Pd(111): structure investigation by spin-polarized LEED
Hilgers, G.
Potthoff, M.
Wirth, S.
Müller, Norbert
Heinzmann, Ulrich
Haunert, L.
Braun, J.
Borstel, G.
ddc:530
Hilgers G, Potthoff M, Wirth S, et al. Xe-adlayers on Pt(111) and Pd(111): structure investigation by spin-polarized LEED. <em>Surface Science</em>. 1991;251-252:612-615.
Elsevier BV
1991
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17757112
https://pub.uni-bielefeld.de/record/1775711
https://pub.uni-bielefeld.de/download/1775711/2311996
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/0039-6028(91)91065-6
info:eu-repo/semantics/altIdentifier/issn/0039-6028
info:eu-repo/semantics/altIdentifier/wos/A1991FY12600124
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775719
2018-07-24T12:59:35Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Collision of oriented NO with Ni(100) and with oriented CO on Ni(100)
Müller, H.
Dierks, B.
Hamza, F.
Zagatta, Gunther
Fecher, G. H.
Böwering, N.
Heinzmann, Ulrich
ddc:530
Müller H, Dierks B, Hamza F, et al. Collision of oriented NO with Ni(100) and with oriented CO on Ni(100). <em>Surface Science</em>. 1992;269-270:207-212.
Elsevier BV
1992
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17757194
https://pub.uni-bielefeld.de/record/1775719
https://pub.uni-bielefeld.de/download/1775719/2311997
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/0039-6028(92)91251-6
info:eu-repo/semantics/altIdentifier/issn/0039-6028
info:eu-repo/semantics/altIdentifier/wos/A1992HW92400034
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775768
2018-07-24T12:59:17Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
The temperature dependence of the spin polarization of field emitted electrons from a W-EuS-vacuum junction
Baum, Günter
Kisker, E.
Mahan, A. H.
Schröder, K.
ddc:530
Baum G, Kisker E, Mahan AH, Schröder K. The temperature dependence of the spin polarization of field emitted electrons from a W-EuS-vacuum junction. <em>Journal of Magnetism and Magnetic Materials</em>. 1976;3(1-2):4-6.
We have measured the temperature dependence P(T) of the electron spin polarization of field emitted electrons from a W-EuS-vacuum junction. The shapes of the P(T) curves depend strongly on the annealing temperature of the EuS layer. Annealed at some temperature between 300°C and 600°C the polarization drops to zero at about 16 ± 2 K.
Elsevier BV
1976
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17757681
https://pub.uni-bielefeld.de/record/1775768
https://pub.uni-bielefeld.de/download/1775768/2312019
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/0304-8853(76)90004-4
info:eu-repo/semantics/altIdentifier/issn/0304-8853
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775773
2018-07-24T12:59:01Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Conduction-band tunneling and electron-spin polarization in field emission from magnetically ordered europium sulfide on tungsten
Kisker, E.
Baum, Günter
Mahan, A. H.
Raith, Wilhelm
Schröder, K.
ddc:530
Kisker E, Baum G, Mahan AH, Raith W, Schröder K. Conduction-band tunneling and electron-spin polarization in field emission from magnetically ordered europium sulfide on tungsten. <em>Phys.Rev.Lett.</em> 1976;36(16):982-985.
We measured the temperature dependence of the current and spin polarization, and determined the work functions from Fowler-Nordheim plots. The current increases exponentially with decreasing temperature. Work-function data can be related directly to the height of the internal W-EuS barrier. This barrier is lowered by magnetic splitting of the EuS conduction band for one electron-spin state which should lead to a spin polarization of unity. The measured spin polarization, however, is equal to the polarization of the 4f to the power of 7 electrons of europium.
American Physical Society (APS)
1976
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17757730
https://pub.uni-bielefeld.de/record/1775773
https://pub.uni-bielefeld.de/download/1775773/2312020
eng
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevLett.36.982
info:eu-repo/semantics/altIdentifier/issn/0031-9007
info:eu-repo/semantics/altIdentifier/wos/A1976BM76600020
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775779
2018-07-24T12:58:27Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
One- and two-photon production of very highly excited states of caesium
van Raan, A. F. J.
Baum, Günter
Raith, Wilhelm
ddc:530
van Raan AFJ, Baum G, Raith W. One- and two-photon production of very highly excited states of caesium. <em>J.Phys. B</em>. 1976;9(7):L173-L176.
Very highly excited p states of Cs with principal quantum numbers 30 < or = Eta < or = 85 were produced by one-step photoexcitation with frequency-doubled light from a flash-lamp-pumped dye laser. Field ionization was employed for selective detection. Ionization occurs at field strengths E > or = Emin with a sharp threshold. The relation Emin(n*) varies as (n*)-4 was verified over a wide range. Two-photon excitation to a very high state via a virtual intermediate state leads to immediate ionization of most of the excited atoms; in this case the ion signal as a function of the light intensity I is not proportional to Ik, k > or = 2, whereas a direct two-photon transition into the continuum yields proportionality with Ito the power of 2.
IOP Publishing
1976
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17757796
https://pub.uni-bielefeld.de/record/1775779
https://pub.uni-bielefeld.de/download/1775779/2312021
eng
info:eu-repo/semantics/altIdentifier/doi/10.1088/0022-3700/9/7/002
info:eu-repo/semantics/altIdentifier/issn/0022-3700
info:eu-repo/semantics/altIdentifier/wos/A1976BS18000002
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775807
2018-07-24T12:59:17Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Structural investigations on Xe/Pd(111) with spin-polarized LEED
Hilgers, G.
Potthoff, M.
Müller, Norbert
Heinzmann, Ulrich
ddc:530
Hilgers G, Potthoff M, Müller N, Heinzmann U. Structural investigations on Xe/Pd(111) with spin-polarized LEED. <em>Surface Science</em>. 1993;287-288(1):414-417.
Elsevier BV
1993
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17758070
https://pub.uni-bielefeld.de/record/1775807
https://pub.uni-bielefeld.de/download/1775807/2312032
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/0039-6028(93)90814-Z
info:eu-repo/semantics/altIdentifier/issn/0039-6028
info:eu-repo/semantics/altIdentifier/wos/A1993LD37000084
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775811
2018-07-24T12:58:03Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Spin polarized photoelectrons with unpolarized light in normal emission from Pt(110)
Irmer, N.
Frentzen, F.
Schmiedeskamp, B.
Heinzmann, Ulrich
ddc:530
Irmer N, Frentzen F, Schmiedeskamp B, Heinzmann U. Spin polarized photoelectrons with unpolarized light in normal emission from Pt(110). <em>Surface Science</em>. 1994;307-309(2):1114-1117.
The normally emitted photoelectrons of the reconstructed (1 x 2) surface of Pt(110) caused by off-normally incoming, unpolarized light are spin polarized. Measurements have been performed with the light of a gas discharge tube and spin polarization of up to 20% has been found for the spin polarization perpendicular to the reaction plane, defined by the momenta of incoming photon and outgoing electron beam. The polarization depends significantly on a rotation of the crystal about the surface normal. The experimental data are in good agreement with theoretical calculations of Feder's group [1] based upon the theory describing the photoemission in the one-step model.
Elsevier BV
1994
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17758112
https://pub.uni-bielefeld.de/record/1775811
https://pub.uni-bielefeld.de/download/1775811/2312033
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/0039-6028(94)91549-0
info:eu-repo/semantics/altIdentifier/issn/0039-6028
info:eu-repo/semantics/altIdentifier/wos/A1994NH82300085
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775816
2018-07-24T12:58:03Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Orientation dependent CO2 production by exposing a CO precovered Pt(100) surface to gas phase oriented NO
Müller, H.
Zagatta, Gunther
Brandt, M.
Wehmeyer, O.
Böwering, N.
Heinzmann, Ulrich
ddc:530
Müller H, Zagatta G, Brandt M, Wehmeyer O, Böwering N, Heinzmann U. Orientation dependent CO2 production by exposing a CO precovered Pt(100) surface to gas phase oriented NO. <em>Surface Science</em>. 1994;307-309(1):159-164.
Using a hexapole technique, a beam of gas phase oriented and state selected NO molecules is directed onto a CO precovered Pt(100) surface. Two quadrupole mass analyzers behind the platinum target record the yield of NO and CO2 molecules leaving the surface. The platinum single crystal acts like a catalyst and the CO2 reaction signal strongly depends on the initial NO orientation, that is to say preferential N- or O-end collisions perpendicular to the surface. At first the orientation asymmetry of the CO2 signal, defined positive for a higher N-end collision signal, has a positive initial value of 0.30, 0.16 and 0.07 for substrate temperatures of Ts = 120 Ts = 130 and Ts = 140°C, respectively. The dependence of the reaction and of the sticking on the initial NO orientation leads to a transition from Eley-Rideal/Harris-Kasemo to Langmuir-Hinshelwood reaction.
Elsevier BV
1994
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17758162
https://pub.uni-bielefeld.de/record/1775816
https://pub.uni-bielefeld.de/download/1775816/2312034
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/0039-6028(94)90387-5
info:eu-repo/semantics/altIdentifier/issn/0039-6028
info:eu-repo/semantics/altIdentifier/wos/A1994NH82400028
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775823
2018-07-24T12:58:03Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Measurement of the scalar polarizability of very highly excited states of caesium
van Raan, A. F. J.
Baum, Günter
Raith, Wilhelm
ddc:530
van Raan AFJ, Baum G, Raith W. Measurement of the scalar polarizability of very highly excited states of caesium. <em>J.Phys. B</em>. 1976;9(12):L349-L352.
First results on the scalar polarizability alpha 0 of a number of very highly excited p states of Cs (40 < or = n < or = 60), produced by one-step photoexcitation with frequency-doubled dye-laser radiation, were obtained by means of electrostatic beam deflection in a two-wire type electric field. Enormous polarizabilities of alpha 0/4 pi > 109 Å3 were measured; the dependence of the polarizability as a function of the principal quantum number n was found to be in agreement with the expected n7 behaviour.
IOP Publishing
1976
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17758238
https://pub.uni-bielefeld.de/record/1775823
https://pub.uni-bielefeld.de/download/1775823/2312035
eng
info:eu-repo/semantics/altIdentifier/doi/10.1088/0022-3700/9/12/003
info:eu-repo/semantics/altIdentifier/issn/0022-3700
info:eu-repo/semantics/altIdentifier/wos/A1976CG81200003
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775827
2018-07-24T12:59:35Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Field emission of monoenergetic spin-polarized electrons
Baum, Günter
Kisker, E.
Mahan, A. H.
Raith, Wilhelm
Reihl, B.
ddc:530
Baum G, Kisker E, Mahan AH, Raith W, Reihl B. Field emission of monoenergetic spin-polarized electrons. <em>Appl.Phys. A</em>. 1977;14(2):149-153.
Springer Science and Business Media LLC
1977
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17758270
https://pub.uni-bielefeld.de/record/1775827
https://pub.uni-bielefeld.de/download/1775827/2312036
eng
info:eu-repo/semantics/altIdentifier/doi/10.1007/BF00883082
info:eu-repo/semantics/altIdentifier/issn/0340-3793
info:eu-repo/semantics/altIdentifier/issn/1432-0630
info:eu-repo/semantics/altIdentifier/wos/A1977DV28900003
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775833
2018-07-24T12:59:17Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Electron field emission from ferromagnetic europium sulfide on tungsten
Kisker, E.
Baum, Günter
Mahan, A. H.
Raith, Wilhelm
Reihl, B.
ddc:530
Kisker E, Baum G, Mahan AH, Raith W, Reihl B. Electron field emission from ferromagnetic europium sulfide on tungsten. <em>Phys. Rev. B</em>. 1978;18(5):2256-2275.
American Physical Society (APS)
1978
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17758338
https://pub.uni-bielefeld.de/record/1775833
https://pub.uni-bielefeld.de/download/1775833/2312037
eng
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.18.2256
info:eu-repo/semantics/altIdentifier/issn/0163-1829
info:eu-repo/semantics/altIdentifier/wos/A1978FT86900027
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775839
2018-07-24T12:59:35Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Application of a dc Fano effect polarized electron source to low-energy electron–atom scattering
Wainwright, P. F.
Alguard, M. J.
Baum, Günter
Lubell, M. S.
S Coupling
Photoionization
Polarized beams
Differential cross sections
Cesium
Atom collisions
Electron
L-
Hydrogen
Mott scattering
ddc:530
Wainwright PF, Alguard MJ, Baum G, Lubell MS. Application of a dc Fano effect polarized electron source to low-energy electron–atom scattering. <em>Rev.Sci.Instrum.</em> 1978;49(5):571-585.
A polarized electron source based upon the photoionization of unpolarized Cs atoms by circularly polarized light (Fano effect) has been developed and applied to the study of spin dependence in low-energy electron–atom scattering. Electron intensities of 10 nA with polarizations of 0.63±0.03 have been obtained routinely during continuous runs of up to 75 h. Frequent optical reversal of the direction of the longitudinal electron polarization minimizes systematic effects so that helicity dependent electron-scattering asymmetries smaller than 4×10 to the power of -4 can be measured.
AIP Publishing
1978
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17758399
https://pub.uni-bielefeld.de/record/1775839
https://pub.uni-bielefeld.de/download/1775839/2312038
eng
info:eu-repo/semantics/altIdentifier/doi/10.1063/1.1135467
info:eu-repo/semantics/altIdentifier/issn/0034-6748
info:eu-repo/semantics/altIdentifier/wos/A1978EX59700001
info:eu-repo/semantics/altIdentifier/pmid/18699152
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775854
2018-07-24T12:58:03Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Polarized electron-electron scattering at GeV energies
Cooper, P. S.
Alguard, M. J.
Ehrlich, R. D.
Hughes, V. W.
Kobayakawa, H.
Ladish, J. S.
Lubell, M. S.
Sasao, N.
Schüler, K. P.
Souder, P. A.
Baum, Günter
Raith, Wilhelm
Kondell, K.
Coward, D. H.
Miller, R. H.
Prescott, C. Y.
Sherden, D. J.
Sinclair, C. K.
ddc:530
Cooper PS, Alguard MJ, Ehrlich RD, et al. Polarized electron-electron scattering at GeV energies. <em>Phys.Rev.Lett.</em> 1975;34(25):1589-1592.
American Physical Society (APS)
1975
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17758542
https://pub.uni-bielefeld.de/record/1775854
https://pub.uni-bielefeld.de/download/1775854/2312043
eng
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevLett.34.1589
info:eu-repo/semantics/altIdentifier/issn/0031-9007
info:eu-repo/semantics/altIdentifier/wos/A1975AF01100015
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775873
2018-07-24T12:58:03Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Elastic scattering of polarized electrons by polarized protons
Alguard, M. J.
Ash, W. W.
Baum, Günter
Clendenin, J. E.
Cooper, P. S.
Coward, D. H.
Ehrlich, R. D.
Etkin, A.
Hughes, V. W.
Kobayakawa, H.
Kondo, K.
Lubell, M. S.
Miller, R. H.
Palmer, D. A.
Raith, Wilhelm
Sasao, N.
Schüler, K. P.
Sherden, D. J.
Sinclair, C. K.
Souder, P. A.
ddc:530
Alguard MJ, Ash WW, Baum G, et al. Elastic scattering of polarized electrons by polarized protons. <em>Phys.Rev.Lett.</em> 1976;37(19):1258-1261.
American Physical Society (APS)
1976
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17758730
https://pub.uni-bielefeld.de/record/1775873
https://pub.uni-bielefeld.de/download/1775873/2312044
eng
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevLett.37.1258
info:eu-repo/semantics/altIdentifier/issn/0031-9007
info:eu-repo/semantics/altIdentifier/wos/A1976CJ37200003
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775894
2018-07-24T12:58:27Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Deep inelastic scattering of polarized electrons by polarized protons
Alguard, M. J.
Ash, W. W.
Baum, Günter
Clendenin, J. E.
Cooper, P. S.
Coward, D. H.
Ehrlich, R. D.
Etkin, A.
Hughes, V. W.
Kobayakawa, H.
Kondo, K.
Lubell, M. S.
Miller, R. H.
Palmer, D. A.
Raith, Wilhelm
Sasao, N.
Schüler, K. P.
Sherden, D. J.
Sinclair, C. K.
Souder, P. A.
ddc:530
Alguard MJ, Ash WW, Baum G, et al. Deep inelastic scattering of polarized electrons by polarized protons. <em>Phys.Rev.Lett.</em> 1976;37(19):1261-1265.
American Physical Society (APS)
1976
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17758945
https://pub.uni-bielefeld.de/record/1775894
https://pub.uni-bielefeld.de/download/1775894/2312045
eng
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevLett.37.1261
info:eu-repo/semantics/altIdentifier/issn/0031-9007
info:eu-repo/semantics/altIdentifier/wos/A1976CJ37200004
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775915
2018-07-24T12:59:17Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Operating experience with the polarized electron gun at SLAC
Alguard, M. J.
Baum, Günter
Clendenin, J. E.
Hughes, V. W.
Lubell, M. S.
Miller, R. H.
Raith, Wilhelm
Schüler, K. P.
Sodja, J.
ddc:530
Alguard MJ, Baum G, Clendenin JE, et al. Operating experience with the polarized electron gun at SLAC. <em>IEEE Trans.Nucl.Sci.</em> 1977;24(3):1603-1604.
Institute of Electrical and Electronics Engineers (IEEE)
1977
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17759157
https://pub.uni-bielefeld.de/record/1775915
https://pub.uni-bielefeld.de/download/1775915/2312046
eng
info:eu-repo/semantics/altIdentifier/doi/10.1109/TNS.1977.4329025
info:eu-repo/semantics/altIdentifier/issn/0018-9499
info:eu-repo/semantics/altIdentifier/issn/1558-1578
info:eu-repo/semantics/altIdentifier/wos/A1977DL67400205
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775925
2018-07-24T12:59:01Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Quantitative mass analysis of N2, CO2 and N2O reaction products in the NO-CO reaction at Pt (100)
Zagatta, Gunther
Müller, H.
Wehmeyer, O.
Brandt, M.
Böwering, N.
Heinzmann, Ulrich
ddc:530
Zagatta G, Müller H, Wehmeyer O, Brandt M, Böwering N, Heinzmann U. Quantitative mass analysis of N2, CO2 and N2O reaction products in the NO-CO reaction at Pt (100). <em>Surface Science</em>. 1994;307-309(1):199-204.
The NO-CO reaction on Pt(100) was examined using temperature programmed reaction methods. The platinum surface was precovered at -80°C with various amounts of both NO and CO and then heated to 370°C. In this case the reaction occurs within a very narrow temperature range around 120°C exhibiting sharp reaction peaks at the mass numbers 28 (N2/CO) and 44 (CO2/N2O). The reaction products were detected by a quadrupole mass analyzer scanning complete mass spectra of 50 amu width at a speed of 15 spectra per second. Thus the course of the reaction was recorded within a single measurement. A subsequent analysis of the data using a modified least-squares fit method was applied to the mass spectra in order to gain information on the true composition of the desorbing gas mixture. To this end isotope and cracking patterns were evaluated. This analysis revealed that beside the major reaction products N2 and CO2 also minor amounts of N2O appear on Pt(100).
Elsevier BV
1994
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17759254
https://pub.uni-bielefeld.de/record/1775925
https://pub.uni-bielefeld.de/download/1775925/2312047
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/0039-6028(94)90394-8
info:eu-repo/semantics/altIdentifier/issn/0039-6028
info:eu-repo/semantics/altIdentifier/wos/A1994NH82400035
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775932
2018-07-24T12:59:01Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Depolarization effects in pulsed photoionization of state-selected lithium
Alguard, M. J.
Clendenin, J. E.
Cooper, P. S.
Ehrlich, R. D.
Hughes, V. W.
Lubell, M. S.
Baum, Günter
Schüler, K. P.
ddc:530
Alguard MJ, Clendenin JE, Cooper PS, et al. Depolarization effects in pulsed photoionization of state-selected lithium. <em>Phys.Rev. A</em>. 1977;16(1):209-212.
American Physical Society (APS)
1977
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17759328
https://pub.uni-bielefeld.de/record/1775932
https://pub.uni-bielefeld.de/download/1775932/2312048
eng
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevA.16.209
info:eu-repo/semantics/altIdentifier/issn/0556-2791
info:eu-repo/semantics/altIdentifier/wos/A1977DP86700021
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775941
2018-07-24T12:59:17Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Deep-inelastic e-p asymmetry measurements and comparison with the Bjorken sum rule and models of proton spin structure
Alguard, M. J.
Ash, W. W.
Baum, Günter
Bergstrom, M. R.
Clendenin, J. E.
Cooper, P. S.
Coward, D. H.
Ehrlich, R. D.
Hughes, V. W.
Kondo, K.
Lubell, M. S.
Miller, R. H.
Miyashita, D. A.
Palmer, D. A.
Raith, Wilhelm
Sasao, N.
Schüler, K. P.
Sherden, D. J.
Souder, P. A.
Zeller, M. E.
ddc:530
Alguard MJ, Ash WW, Baum G, et al. Deep-inelastic e-p asymmetry measurements and comparison with the Bjorken sum rule and models of proton spin structure. <em>Phys.Rev.Lett.</em> 1978;41(2):70-73.
American Physical Society (APS)
1978
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17759417
https://pub.uni-bielefeld.de/record/1775941
https://pub.uni-bielefeld.de/download/1775941/2312049
eng
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevLett.41.70
info:eu-repo/semantics/altIdentifier/issn/0031-9007
info:eu-repo/semantics/altIdentifier/wos/A1978FE88100002
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775962
2018-07-24T12:58:04Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Search for parity violation in deep-inelastic scattering of polarized electrons by unpolarized deuterons
Atwood, W. B.
Cottrell, R. L. A.
DeStaebler, H.
Miller, R. H.
Pessard, H.
Prescott, C. Y.
Rochester, L. S.
Taylor, R. E.
Alguard, M. J.
Clendenin, J. E.
Cooper, P. S.
Ehrlich, R. D.
Hughes, V. W.
Lubell, M. S.
Baum, Günter
Schüler, K. P.
Lübelsmeyer, K.
ddc:530
Atwood WB, Cottrell RLA, DeStaebler H, et al. Search for parity violation in deep-inelastic scattering of polarized electrons by unpolarized deuterons. <em>Phys.Rev. D</em>. 1978;18(7):2223-2226.
American Physical Society (APS)
1978
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17759621
https://pub.uni-bielefeld.de/record/1775962
https://pub.uni-bielefeld.de/download/1775962/2312050
eng
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevD.18.2223
info:eu-repo/semantics/altIdentifier/issn/0556-2821
info:eu-repo/semantics/altIdentifier/wos/A1978FW65800002
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775980
2018-07-24T12:59:35Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
A source of highly polarized electrons at the Stanford Linear Accelerator Center
Alguard, M. J.
Clendenin, J. E.
Ehrlich, R. D.
Hughes, V. W.
Ladish, J. S.
Lubell, M. S.
Schüler, K. P.
Baum, Günter
Raith, Wilhelm
Miller, R. H.
Lysenko, W.
ddc:530
Alguard MJ, Clendenin JE, Ehrlich RD, et al. A source of highly polarized electrons at the Stanford Linear Accelerator Center. <em>Nucl.Instrum.Methods</em>. 1979;163(1):29-59.
Elsevier BV
1979
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17759803
https://pub.uni-bielefeld.de/record/1775980
https://pub.uni-bielefeld.de/download/1775980/2312051
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/0029-554X(79)90030-2
info:eu-repo/semantics/altIdentifier/issn/0029-554X
info:eu-repo/semantics/altIdentifier/wos/A1979HB61500004
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1775992
2018-07-24T12:59:35Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Experimental test of special relativity from a high-gamma electron g-2 measurement
Cooper, P. S.
Alguard, M. J.
Ehrlich, R. D.
Hughes, V. W.
Kobayakawa, H.
Ladish, J. S.
Lubell, M. S.
Sasao, N.
Schüler, K. P.
Souder, P. A.
Coward, D. H.
Miller, R. H.
Prescott, C. Y.
Sherden, D. J.
Sinclair, C. K.
Baum, Günter
Raith, Wilhelm
Kondo, K.
ddc:530
Cooper PS, Alguard MJ, Ehrlich RD, et al. Experimental test of special relativity from a high-gamma electron g-2 measurement. <em>Phys.Rev.Lett.</em> 1979;42(21):1386-1389.
American Physical Society (APS)
1979
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17759924
https://pub.uni-bielefeld.de/record/1775992
https://pub.uni-bielefeld.de/download/1775992/2312052
eng
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevLett.42.1386
info:eu-repo/semantics/altIdentifier/issn/0031-9007
info:eu-repo/semantics/altIdentifier/wos/A1979GV45600002
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1776011
2018-07-24T12:58:04Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Measurement of asymmetry in spin-dependent e-p resonance-region scattering
Baum, Günter
Bergstrom, M. R.
Clendenin, J. E.
Ehrlich, R. D.
Hughes, V. W.
Kondo, K.
Lubell, M. S.
Miyashita, D. A.
Miller, R. H.
Palmer, D. A.
Raith, Wilhelm
Sasao, N.
Schüler, K. P.
Souder, P. A.
ddc:530
Baum G, Bergstrom MR, Clendenin JE, et al. Measurement of asymmetry in spin-dependent e-p resonance-region scattering. <em>Phys.Rev.Lett.</em> 1980;45(25):2000-2003.
American Physical Society (APS)
1980
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17760118
https://pub.uni-bielefeld.de/record/1776011
https://pub.uni-bielefeld.de/download/1776011/2312053
eng
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevLett.45.2000
info:eu-repo/semantics/altIdentifier/issn/0031-9007
info:eu-repo/semantics/altIdentifier/wos/A1980KU23900005
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1776026
2018-07-24T12:59:17Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Dual-frequency optical pumping for spin-polarizing a lithium atomic beam
Baum, Günter
Caldwell, C.
Schröder, W.
ddc:530
Baum G, Caldwell C, Schröder W. Dual-frequency optical pumping for spin-polarizing a lithium atomic beam. <em>Appl.Phys. A</em>. 1980;21(2):121-126.
Springer Science and Business Media LLC
1980
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17760267
https://pub.uni-bielefeld.de/record/1776026
https://pub.uni-bielefeld.de/download/1776026/2312054
eng
info:eu-repo/semantics/altIdentifier/doi/10.1007/BF00900673
info:eu-repo/semantics/altIdentifier/issn/0340-3793
info:eu-repo/semantics/altIdentifier/issn/1432-0630
info:eu-repo/semantics/altIdentifier/wos/A1980JD37700003
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1776030
2018-07-24T12:58:05Z
book_chapter
doc-type:bookPart
ddc:530
book_chapterFtxt
open_access
Polarized electron-Lithium scattering
Raith, Wilhelm
Baum, Günter
Caldwell, C.
Kisker, E.
Kleinpoppen, Hans
Astronomy
Physics
ddc:530
Raith W, Baum G, Caldwell C, Kisker E. Polarized electron-Lithium scattering. In: Kleinpoppen H, ed. <em>Coherence and correlation in atomic collision</em>. Physics of atoms and molecules. New York [u.a.]: Plenum Press; 1980: 567-575.
An experiment is discussed that will measure spin-dependent asymmetries in the scattering of polarized electrons on polarized Li atoms. Results are presented for polarizing the atomic beam by the method of optical pumping and for techniques of polarization reversal in both beams which minimize systematic errors.
Plenum Press
1980
http://purl.org/coar/resource_type/c_3248
info:eu-repo/semantics/bookPart
doc-type:bookPart
text
https://nbn-resolving.org/urn:nbn:de:0070-bipr-10605
https://pub.uni-bielefeld.de/record/1776030
https://pub.uni-bielefeld.de/download/1776030/2312055
eng
info:eu-repo/semantics/altIdentifier/isbn/0-306-40250-5
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1776034
2018-07-24T12:59:35Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Hg 5d and 6s: Multichannel quantum-defect analysis of experimental data
Schäfers, F.
Heckenkamp, Ch.
Müller, M.
Radojevic, V.
Heinzmann, Ulrich
ddc:530
Schäfers F, Heckenkamp C, Müller M, Radojevic V, Heinzmann U. Hg 5d and 6s: Multichannel quantum-defect analysis of experimental data. <em>Physical Review, A: Atomic, Molecular and Optical Physics</em>. 1990;42(5):2603-2613.
Experimental spin-polarization data for the Hg 6s Cooper minimum and dipole-transition amplitudes and phase-shift differences for photoionization of the Hg 5d and 6s shells (eight channels) in the photon-energy region from the 2D3/2 threshold up to 35 eV (kinetic energies from 0 to 20 eV) are presented and compared with new relativistic random-phase approximation calculations. The data were evaluated from an experimental data set, quantum mechanically complete, consisting of cross-section and photoelectron spin-polarization data. For the 5d subshells the results show strong interchannel coupling between the outgoing p and f continuum channels. The results for Hg 6s could be used for an independent determination of the photoelectron angular distribution parameter [Beta] in the Cooper-minimum region. This region is shown to be perturbed by numerous two-electron excitations, which might be a possible explanation for the controversy on its location.
American Physical Society (APS)
1990
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17760348
https://pub.uni-bielefeld.de/record/1776034
https://pub.uni-bielefeld.de/download/1776034/2312056
eng
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevA.42.2603
info:eu-repo/semantics/altIdentifier/issn/1050-2947
info:eu-repo/semantics/altIdentifier/issn/1094-1622
info:eu-repo/semantics/altIdentifier/wos/A1990DY00700014
info:eu-repo/semantics/altIdentifier/pmid/9904328
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1776039
2018-07-24T12:59:35Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Vibrationally resolved photoelectron-spin-polarization spectroscopy of HI molecules
Böwering, N.
Salzmann, M.
Müller, M.
Klausing, H.-W.
Heinzmann, Ulrich
ddc:530
Böwering N, Salzmann M, Müller M, Klausing H-W, Heinzmann U. Vibrationally resolved photoelectron-spin-polarization spectroscopy of HI molecules. <em>Physical Review, A: Atomic, Molecular and Optical Physics</em>. 1992;45(1):R11-R14.
American Physical Society (APS)
1992
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17760391
https://pub.uni-bielefeld.de/record/1776039
https://pub.uni-bielefeld.de/download/1776039/2312057
eng
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevA.45.R11
info:eu-repo/semantics/altIdentifier/issn/1050-2947
info:eu-repo/semantics/altIdentifier/issn/1094-1622
info:eu-repo/semantics/altIdentifier/wos/A1992GY51800004
info:eu-repo/semantics/altIdentifier/pmid/9906765
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1776044
2018-07-24T12:58:27Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Spin-polarization spectroscopy of Auger electrons and photoelectrons in 5p ionization of barium atoms
Kuntze, R.
Salzmann, M.
Böwering, N.
Heinzmann, Ulrich
Ivanov, V. K.
Kabachnik, Nikolay M.
ddc:530
Kuntze R, Salzmann M, Böwering N, Heinzmann U, Ivanov VK, Kabachnik NM. Spin-polarization spectroscopy of Auger electrons and photoelectrons in 5p ionization of barium atoms. <em>Physical Review, A: Atomic, Molecular and Optical Physics</em>. 1994;50(1):489-495.
We report on experimental studies of the photon energy dependence of the Auger yield and the spin polarization of Auger electrons and photoelectrons after photoionization of the 5p subshell of free Ba atoms with circularly polarized light for photon energies between 22 and 31 eV. Relations between the dynamics of the Auger-decay and the photoelectron emission are derived and their validity is probed from the experimental results. Our data are compared with numerical calculations, which were performed in the Hartree-Fock and in the random-phase approximation with exchange approach.
American Physical Society (APS)
1994
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17760446
https://pub.uni-bielefeld.de/record/1776044
https://pub.uni-bielefeld.de/download/1776044/2312058
eng
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevA.50.489
info:eu-repo/semantics/altIdentifier/issn/1050-2947
info:eu-repo/semantics/altIdentifier/issn/1094-1622
info:eu-repo/semantics/altIdentifier/wos/A1994NX00100061
info:eu-repo/semantics/altIdentifier/pmid/9910918
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1776057
2018-07-24T12:59:17Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Spin-dependent electron impact ionisation of lithium from threshold to 80 eV
Baum, Günter
Kisker, E.
Raith, Wilhelm
Schröder, W.
Sillmen, U.
Zenses, D.
ddc:530
Baum G, Kisker E, Raith W, Schröder W, Sillmen U, Zenses D. Spin-dependent electron impact ionisation of lithium from threshold to 80 eV. <em>J.Phys. B</em>. 1981;14(22):4377-4388.
The ionisation asymmetry is measured in a crossed-beam experiment utilising a W/EuS field emitter as a source of polarised electrons and dual-frequency optical pumping as the polarising process for the lithium atomic beam. The antiparallel-parallel asymmetry of the total ionisation cross section is positive with a broad maximum of 0.35 near threshold and a gradual decrease towards higher energies. A comparison is made with results of binary encounter and Born approximations. At threshold no significant variation of the asymmetry with energy is observed within a resolution of 0.3 eV.
IOP Publishing
1981
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17760570
https://pub.uni-bielefeld.de/record/1776057
https://pub.uni-bielefeld.de/download/1776057/2312062
eng
info:eu-repo/semantics/altIdentifier/doi/10.1088/0022-3700/14/22/020
info:eu-repo/semantics/altIdentifier/issn/0022-3700
info:eu-repo/semantics/altIdentifier/wos/A1981MS28500020
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1776064
2018-07-24T12:59:17Z
conference
doc-type:conferenceObject
ddc:530
conferenceFtxt
open_access
A spin flipper for thermal atomic beams
Baum, Günter
Schröder, W.
Bunce, Gerry M.
ddc:530
Baum G, Schröder W. A spin flipper for thermal atomic beams. In: Bunce GM, ed. <em>AIP conference proceedings</em>. AIP conference proceedings. Particles and fields subseries / American Institute of Physics <New York, NY>. Vol 95. New York: American Institute of Physics; 1983: 594-596.
American Institute of Physics
1983
http://purl.org/coar/resource_type/c_5794
info:eu-repo/semantics/conferenceObject
doc-type:conferenceObject
text
https://nbn-resolving.org/urn:nbn:de:0070-bipr-10864
https://pub.uni-bielefeld.de/record/1776064
https://pub.uni-bielefeld.de/download/1776064/2312063
eng
info:eu-repo/semantics/altIdentifier/doi/10.1063/1.33814
info:eu-repo/semantics/altIdentifier/issn/0094-243X
info:eu-repo/semantics/altIdentifier/isbn/0-88318-194-0
info:eu-repo/semantics/altIdentifier/wos/A1983QH93400102
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1776066
2018-07-24T12:58:05Z
conference
doc-type:conferenceObject
ddc:530
conferenceFtxt
open_access
Measurement of the internal spin structure of the proton
Oppenheim, R. F.
Baum, Günter
Bergstrom, M. R.
Bolton, P. R.
Clendenin, J. E.
DeBotton, N. R.
Dhawan, S. K.
Fong-Tom, R. A.
Guo, Y.-N.
Harsh, V.-R.
Hughes, V. W.
Kondo, K.
Lubell, M. S.
Mao, C.-L.
Miller, R. H.
Miyashita, D. A.
Morimoto, K.
Moser, U. F.
Nakano, I.
Palmer, D. A.
Panda, L.
Raith, Wilhelm
Sasao, N.
Schuler, K. P.
Seely, M. L.
Sodja, J.
Souder, P. A.
Lorant, S. J. St.
Takikawa, K.
Werlen, M.
Bunce, Gerry M.
ddc:530
Oppenheim RF, Baum G, Bergstrom MR, et al. Measurement of the internal spin structure of the proton. In: Bunce GM, ed. <em>AIP Conference Proceedings</em>. AIP conference proceedings. Particles and fields subseries / American Institute of Physics <New York, NY>. Vol 95. New York: American Institute of Physics; 1983: 255-258.
American Institute of Physics
1983
http://purl.org/coar/resource_type/c_5794
info:eu-repo/semantics/conferenceObject
doc-type:conferenceObject
text
https://nbn-resolving.org/urn:nbn:de:0070-bipr-10877
https://pub.uni-bielefeld.de/record/1776066
https://pub.uni-bielefeld.de/download/1776066/2312064
eng
info:eu-repo/semantics/altIdentifier/doi/10.1063/1.33863
info:eu-repo/semantics/altIdentifier/issn/0094-243X
info:eu-repo/semantics/altIdentifier/isbn/0-88318-194-0
info:eu-repo/semantics/altIdentifier/wos/A1983QH93400044
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1776096
2018-07-24T12:59:35Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
New measurement of deep-inelastic e-p asymmetries
Baum, Günter
Bergstrom, M. R.
Bolton, P. R.
Clendenin, J. E.
DeBotton, N. R.
Dhawan, S. K.
Guo, Y.-N.
Harsh, V.-R.
Hughes, V. W.
Kondo, K.
Lubell, M. S.
Mao, Z.-L.
Miller, R. H.
Miyashita, D. A.
Morimoto, K.
Moser, U. F.
Nakano, I.
Oppenheim, R. F.
Palmer, D. A.
Panda, L.
Raith, Wilhelm
Sasao, N.
Schuler, K. P.
Seely, M. L.
Souder, P. A.
Lorant, S. J. St.
Takikawa, K.
Werlen, M.
ddc:530
Baum G, Bergstrom MR, Bolton PR, et al. New measurement of deep-inelastic e-p asymmetries. <em>Phys.Rev.Lett.</em> 1983;51(13):1135-1138.
American Physical Society (APS)
1983
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17760960
https://pub.uni-bielefeld.de/record/1776096
https://pub.uni-bielefeld.de/download/1776096/2312065
eng
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevLett.51.1135
info:eu-repo/semantics/altIdentifier/issn/0031-9007
info:eu-repo/semantics/altIdentifier/wos/A1983RH69200007
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1776148
2019-02-18T12:58:07Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Spin-resolved photoionisation of lead above the Pb+ (6s26p) 2P3/2 - threshold
Müller, M.
Böwering, N.
Schäfers, F.
Heinzmann, Ulrich
ddc:530
Müller M, Böwering N, Schäfers F, Heinzmann U. Spin-resolved photoionisation of lead above the Pb+ (6s26p) 2P3/2 - threshold. <em>Physica Scripta</em>. 1990;41(1):38-41.
Royal Swedish Acad. Sciences
1990
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17761489
https://pub.uni-bielefeld.de/record/1776148
https://pub.uni-bielefeld.de/download/1776148/2312076
eng
info:eu-repo/semantics/altIdentifier/doi/10.1088/0031-8949/41/1/010
info:eu-repo/semantics/altIdentifier/issn/0031-8949
info:eu-repo/semantics/altIdentifier/issn/1402-4896
info:eu-repo/semantics/altIdentifier/wos/A1990CN78300008
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1776152
2018-07-24T12:58:27Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Spin-resolved photoemission from Xe-adlayers on Pd(111)
Kessler, B.
Müller, Norbert
Schmiedeskamp, B.
Vogt, B.
Heinzmann, Ulrich
ddc:530
Kessler B, Müller N, Schmiedeskamp B, Vogt B, Heinzmann U. Spin-resolved photoemission from Xe-adlayers on Pd(111). <em>Physica Scripta</em>. 1990;41(6):953-957.
Xe-adsorbates on Pd(111) in the coverage region from one layer up to a Xe(111) crystal with first layer Xe-Xe distances comparable to bulk Xe are studied by spin-resolved photoemission. Normally incident circularly polarized synchrotron radiation from BESSY (Berlin) is used and normally emitted electrons are analyzed. No dispersion with photon energy can be found for a system of two Xe-layers. The spin-polarization component measured along the direction of light points to a changing symmetry of the final states. Their symmetry is atom-like for a one-layer system and bulk-like for two and more layers. The initial state symmetry is examined by excitation and decay of excitonic states and is found to be the same for two Xe-layers as for one single Xe-layer. The degeneracy of the valence levels connected with the high symmetry of the [Gamma]-point in bulk Xe can be observed for a system of much more than 5 Xe-layers thickness.
IOP Publishing
1990
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17761526
https://pub.uni-bielefeld.de/record/1776152
https://pub.uni-bielefeld.de/download/1776152/2312077
eng
info:eu-repo/semantics/altIdentifier/doi/10.1088/0031-8949/41/6/053
info:eu-repo/semantics/altIdentifier/issn/0031-8949
info:eu-repo/semantics/altIdentifier/issn/1402-4896
info:eu-repo/semantics/altIdentifier/wos/A1990DP11700053
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1776157
2018-07-24T12:58:27Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
A laser-based coherent VUV source and its application to highly resolved studies of the Fano effect in HI
Huth-Fehre, T.
Mank, A.
Drescher, Markus
Böwering, N.
Heinzmann, Ulrich
ddc:530
Huth-Fehre T, Mank A, Drescher M, Böwering N, Heinzmann U. A laser-based coherent VUV source and its application to highly resolved studies of the Fano effect in HI. <em>Physica Scripta</em>. 1990;41(4):454-457.
IOP Publishing
1990
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17761575
https://pub.uni-bielefeld.de/record/1776157
https://pub.uni-bielefeld.de/download/1776157/2312078
eng
info:eu-repo/semantics/altIdentifier/doi/10.1088/0031-8949/41/4/016
info:eu-repo/semantics/altIdentifier/issn/0031-8949
info:eu-repo/semantics/altIdentifier/issn/1402-4896
info:eu-repo/semantics/altIdentifier/wos/A1990DC54000016
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1776238
2018-07-24T12:59:01Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Jet structure and scaling in E + E-Annihilation
Baier, Rudolf
Engels, Jürgen
Satz, Helmut
Schilling, K.
Elementarteilchenphysik
ddc:530
Baier R, Engels J, Satz H, Schilling K. Jet structure and scaling in E + E-Annihilation. <em>Il nuovo cimento della Società Italiana di Fisica, A: nuclei, particles and field</em>. 1975;28(4):455-474.
An uncorrelated jet model, with randomly oriently jet axis and parameters as determined from high-energy hadronie interactions, is applied to e+e- annihilation. The resulting features (multiplicities, spectra, correlations, branching ratios) are calculated both at finite c.m.s. energies ((3/5)Ge V)and asymptotically, in order to study the approach to asymptotic behaviour expected for quark, parton and similar models. It is shown that such descriptions, were the jet structure is the same as in hadron-hadron interactions, lead for cinematic reasons to very late scaling of the inclusive hadron distribution. Our results are compared with cluster models for e+e-annihilation and with data.
Springer Science and Business Media LLC
1975
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-bipr-11668
https://pub.uni-bielefeld.de/record/1776238
https://pub.uni-bielefeld.de/download/1776238/2312119
eng
info:eu-repo/semantics/altIdentifier/doi/10.1007/BF02894860
info:eu-repo/semantics/altIdentifier/issn/0369-3546
info:eu-repo/semantics/altIdentifier/issn/1826-9869
info:eu-repo/semantics/altIdentifier/wos/A1975AR52400004
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1776240
2018-07-24T12:59:01Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Legendre padé approximants in [pi]N scattering
Engels, Jürgen
Fleischer, Jochem
ddc:530
Engels J, Fleischer J. Legendre padé approximants in [pi]N scattering. <em>Il nuovo cimento della Società Italiana di Fisica, A: nuclei, particles and field</em>. 1974;24(1):73-92.
Padé approximants are expected to probe the singularity structure of scattering amplitudes. We apply Padé approximants for Legendre series to [pi]N amplitudes, which are obtained from phase shifts. The imaginary parts were calculated from the phase-shift analysis of Almehed and Lovelace, the real parts from fixed-t dispersion relations directly and from the phase-shift analysis of Nielsen and Oades. For all amplitudes (exept for the isospin-odd Nielsen-Oades) the poles of the Padé approximants are outside the region of analyticity in the Mandelstam plane. The Padé approximants and the truncated Legendre series for the imaginary parts deviate from each other only up to 1% even close to the boundary of the double-spectral function (except for B (+)).
Springer Science and Business Media LLC
1974
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-bipr-11672
https://pub.uni-bielefeld.de/record/1776240
https://pub.uni-bielefeld.de/download/1776240/2312120
eng
info:eu-repo/semantics/altIdentifier/doi/10.1007/BF02735788
info:eu-repo/semantics/altIdentifier/issn/0369-3546
info:eu-repo/semantics/altIdentifier/issn/1826-9869
info:eu-repo/semantics/altIdentifier/wos/A1975AR52400004
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1776241
2018-07-24T12:58:28Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Statistical Bootstrap Models for Build-Up and Decay of Isoscalar and Isovector Fireballs
Engels, Jürgen
Fabricius, K.
Schilling, K.
ddc:530
Engels J, Fabricius K, Schilling K. Statistical Bootstrap Models for Build-Up and Decay of Isoscalar and Isovector Fireballs. <em>Il nuovo cimento della Società Italiana di Fisica, A: nuclei, particles and field</em>. 1974;23(3):581-609.
Springer Science and Business Media LLC
1974
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-bipr-11689
https://pub.uni-bielefeld.de/record/1776241
https://pub.uni-bielefeld.de/download/1776241/2312121
eng
info:eu-repo/semantics/altIdentifier/doi/10.1007/BF02821235
info:eu-repo/semantics/altIdentifier/issn/0369-3546
info:eu-repo/semantics/altIdentifier/issn/1826-9869
info:eu-repo/semantics/altIdentifier/wos/A1974U374300010
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1776244
2018-07-24T12:58:05Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Statistical and Thermodynamic Descriptions of Hadron Production in e+e- Annihilation
Engels, Jürgen
Schilling, K.
Satz, Helmut
ddc:530
Engels J, Schilling K, Satz H. Statistical and Thermodynamic Descriptions of Hadron Production in e+e- Annihilation. <em>Il nuovo cimento della Società Italiana di Fisica, A: nuclei, particles and field</em>. 1973;17(4):535-556.
Springer Science and Business Media LLC
1973
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-bipr-11694
https://pub.uni-bielefeld.de/record/1776244
https://pub.uni-bielefeld.de/download/1776244/2312122
eng
info:eu-repo/semantics/altIdentifier/doi/10.1007/BF02786833
info:eu-repo/semantics/altIdentifier/issn/0369-3546
info:eu-repo/semantics/altIdentifier/issn/1826-9869
info:eu-repo/semantics/altIdentifier/wos/A1973R151800003
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1776246
2018-07-24T12:58:28Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
The analysis of Polyakov loop and spin correlators in finite volumes
Engels, Jürgen
Mitrjushkin, V. K.
Neuhaus, Thomas
ddc:530
Engels J, Mitrjushkin VK, Neuhaus T. The analysis of Polyakov loop and spin correlators in finite volumes. <em>Nuclear Physics, B: Proceedings Supplements</em>. 1994;34:298-300.
We derive an analytic expression for point-to-point correlation functions of the Polyakov loop based on the transfer matrix formalism. The contributions from the eigenvalues of the transfer matrix including and beyond the mass gap are investigated both for the 2d Ising model and in finite temperature SU(2) gauge theory. We find that the leading matrix element shows similar scaling properties in both models. Just above the critical point we obtain for SU(2) a Debye screening mass mu(D)/T almost-equal-to 4, independent of the volume.
Elsevier BV
1994
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17762461
https://pub.uni-bielefeld.de/record/1776246
https://pub.uni-bielefeld.de/download/1776246/2312123
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/0920-5632(94)90372-7
info:eu-repo/semantics/altIdentifier/issn/0920-5632
info:eu-repo/semantics/altIdentifier/wos/A1994NJ62500058
info:eu-repo/semantics/altIdentifier/arxiv/hep-lat/9311055
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1776250
2018-07-24T12:59:35Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
A straightforward way to evaluate some critical parameters in SU(2) lattice gauge theory
Engels, Jürgen
ddc:530
Engels J. A straightforward way to evaluate some critical parameters in SU(2) lattice gauge theory. <em>Nuclear Physics, B: Proceedings Supplements</em>. 1993;30:347-350.
We show how the critical point and the ratio [lambda]/[nu] of critical exponents of the finite temperature deconfinement transition of SU(2) gauge theory may be determined simply from the expectation value of the square of the Polyakov loop. In a similar way we estimate the ratio ([alpha]- 1)/[nu]. The method may also be used in other lattice theories at second order transitions.
Elsevier BV
1993
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17762504
https://pub.uni-bielefeld.de/record/1776250
https://pub.uni-bielefeld.de/download/1776250/2312124
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/0920-5632(93)90224-T
info:eu-repo/semantics/altIdentifier/issn/0920-5632
info:eu-repo/semantics/altIdentifier/wos/A1993KX82300052
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1776252
2018-07-24T12:59:01Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Efficient calculation of critical parameters in SU (2) gauge theory
Engels, Jürgen
Fingberg, Jochen
Mitrjushkin, V. K.
ddc:530
Engels J, Fingberg J, Mitrjushkin VK. Efficient calculation of critical parameters in SU (2) gauge theory. <em>Physics Letters, B</em>. 1993;298(1-2):154-158.
We show how the critical point and the ratio [lambda]/[nu] of critical exponents of the finite temperature deconfinement transition of SU (2) gauge theory may be determined simply from the expectation value of the square of the Polyakov loop. In a similar way we estimate the ratio ([alpha]-1)/[nu]. The method is based on a consistent application of finite size scaling theory to results obtained with the density of state technique. It may also be used in other lattice theories at second order transitions.
Elsevier BV
1993
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17762520
https://pub.uni-bielefeld.de/record/1776252
https://pub.uni-bielefeld.de/download/1776252/2312125
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/0370-2693(93)91722-Y
info:eu-repo/semantics/altIdentifier/issn/0370-2693
info:eu-repo/semantics/altIdentifier/wos/A1993KH28100028
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1776256
2018-07-24T12:58:05Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Phenomenological renormalization and scaling behaviour of SU(2) lattice gauge theory
Engels, Jürgen
Fingberg, Jochen
Miller, David
ddc:530
Engels J, Fingberg J, Miller D. Phenomenological renormalization and scaling behaviour of SU(2) lattice gauge theory. <em>Nuclear Physics, B</em>. 1992;387(2):501-519.
Near the deconfinement transition of SU(2) gauge theory the finite-size scaling behaviour of the order parameter, the susceptibility and the normalized fourth cumulant g(r) is studied on N(simga)3 x N(tau) lattices with N(tau) = 4 and 6 and N(sigma) = 8, 12, 18, 24 or 26. For that purpose we have calculated new high-statistics data for N(tau) = 6 and re-evaluated previous results obtained for N(tau) = 4. In both cases we used the density of states method. We determine the critical coupling and with a new way of phenomenological renormalization the critical exponents. For N(tau) = 6 we find that 4/g(c, infinity)2 = 2.4265(3). Using the results for the critical temperature obtained for different N(tau) we examine the approach to asymptotic scaling.
Elsevier BV
1992
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17762567
https://pub.uni-bielefeld.de/record/1776256
https://pub.uni-bielefeld.de/download/1776256/2312126
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/0550-3213(92)90171-7
info:eu-repo/semantics/altIdentifier/issn/0550-3213
info:eu-repo/semantics/altIdentifier/wos/A1992KF40400012
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1776259
2018-07-24T12:59:17Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Mass gap and finite-size effects in finite temperature SU (2) lattice gauge theory
Engels, Jürgen
Mitrjushkin, V. K.
ddc:530
Engels J, Mitrjushkin VK. Mass gap and finite-size effects in finite temperature SU (2) lattice gauge theory. <em>Physics Letters, B</em>. 1992;282(3-4):415-422.
This letter is devoted to the investigation of the point-point Polyakov loop correlators in SU (2) lattice gauge theory on 4Ns3 lattices with Ns=8, 12, 18 and 26. We use an analytic expression for point-point correlators provided by the transfer matrix formalism to study the temperature dependence of the mass gap [mu]m.g. and the corresponding matrix element [nu] near the critical point in a finite volume. The finite-size scaling analysis of the values [mu]m.g.([beta];Ns) obtained gives the possibility to extract the critical value [beta]c, the critical exponent [nu] and the surface tension [alpha]s.t.
Elsevier BV
1992
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17762597
https://pub.uni-bielefeld.de/record/1776259
https://pub.uni-bielefeld.de/download/1776259/2312127
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/0370-2693(92)90662-N
info:eu-repo/semantics/altIdentifier/issn/0370-2693
info:eu-repo/semantics/altIdentifier/wos/A1992HY68400028
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1776262
2018-07-24T12:59:35Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Non-perturbative thermodynamics of SU (N) gauge theories
Engels, Jürgen
Fingberg, Jochen
Karsch, Frithjof
Miller, David
Weber, M.
ddc:530
Engels J, Fingberg J, Karsch F, Miller D, Weber M. Non-perturbative thermodynamics of SU (N) gauge theories. <em>Physics Letters, B</em>. 1990;252(4):625-630.
The pressure near the deconfinement transition as determined up to now in lattice gauge theories shows unphysical behaviour: it can become negative and may in SU (3) even have a gap at the transition. This has been attributed to the use of only perturbatively known derivatives of coupling constants. We propose a method to evaluate the pressure, which works without these derivatives, and is valid on large lattices. In SU (2) we study the finite-volume effects and show that for lattices with spatial extent N-sigma greater-than-or-similar-to 15 these effects are negligible. In SU (3) we then ontain a postive and continuous pressure. The influence of non-perturbative corrections to the beta-function on the energy density are investigated and found to be important, in particular for the latent heat.
Elsevier BV
1990
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17762624
https://pub.uni-bielefeld.de/record/1776262
https://pub.uni-bielefeld.de/download/1776262/2312128
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/0370-2693(90)90496-S
info:eu-repo/semantics/altIdentifier/issn/0370-2693
info:eu-repo/semantics/altIdentifier/wos/A1990EU50000020
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1776266
2018-07-24T12:59:17Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Finite size scaling analysis of SU(2) lattice gauge theory in (3 + 1) dimensions
Engels, Jürgen
Fingberg, Jochen
Weber, M.
ddc:530
Engels J, Fingberg J, Weber M. Finite size scaling analysis of SU(2) lattice gauge theory in (3 + 1) dimensions. <em>Nuclear Physics, B</em>. 1990;332(3):737-759.
We have calculated the order parameter, the susceptibility and the normalized fourth cumulant gr with high precision on N[sigma]3×4 lattices (N[sigma]=8,12,18 and 26) for SU(2) gauge theory at finite temperature. The finite size scaling analysis of these quantities confirms that the critical exponents of SU(2) gauge theory are the same as those of the three-dimensional Ising model, the infinite volume value for the critical coupling is 4/gc2 (N[iota] = 4) = 2.2985 ±0.0006. With direct scaling fits we determine [beta]/[nu] and [lambda]/[nu] and find excellent agreement with the hyperscaling relation.
Elsevier BV
1990
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17762663
https://pub.uni-bielefeld.de/record/1776266
https://pub.uni-bielefeld.de/download/1776266/2312129
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/0550-3213(90)90010-B
info:eu-repo/semantics/altIdentifier/issn/0550-3213
info:eu-repo/semantics/altIdentifier/wos/A1990CY11700010
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1776270
2018-07-24T12:58:05Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
A finite size analysis of the heavy quark potential in a deconfining medium
Engels, Jürgen
Karsch, Frithjof
Satz, Helmut
ddc:530
Engels J, Karsch F, Satz H. A finite size analysis of the heavy quark potential in a deconfining medium. <em>Nuclear Physics, B</em>. 1989;315(2):419-435.
From lattice studies of Polyakov loop correlations, we determine the potential for a static quark-antiquark pair in a thermal SU(2) gauge field system above the deconfinement temperature. We perform a high statistics, finite size analysis of the heavy quark potential. We investigate the functional form of the potential at intermediate distances and compare it to continuum perturbation theory predictions.
Elsevier BV
1989
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17762708
https://pub.uni-bielefeld.de/record/1776270
https://pub.uni-bielefeld.de/download/1776270/2312130
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/0550-3213(89)90362-3
info:eu-repo/semantics/altIdentifier/issn/0550-3213
info:eu-repo/semantics/altIdentifier/wos/A1989T889600007
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1776272
2018-07-24T12:58:28Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
The onset of deconfinement in SU(2) lattice gauge theory
Engels, Jürgen
Fingberg, Jochen
Redlich, K.
Satz, Helmut
Weber, M.
ddc:530
Engels J, Fingberg J, Redlich K, Satz H, Weber M. The onset of deconfinement in SU(2) lattice gauge theory. <em>Zeitschrift für Physik, C: Particles and Fields</em>. 1989;42(2):341-347.
In SU(2) lattice gauge theory, we study deviations from ideal gas behaviour near the deconfinement point. On lattices of sizeN [sigma] 3 ×4,N [sigma]=8, 12, 18 and 26, we calculate the quantity [Delta]= [epsilon]–3P)/T 4. It increases sharply just above T c , peaks at T/T c =1.15 ±0.05 and then drops quickly. This form of behaviour is shown to be the consequence of a second order phase transition. Dynamically it could arise because just above T c , the low momentum states of the system are remnant massive modes rather than deconfined massless gluons.
Springer Science and Business Media LLC
1989
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17762728
https://pub.uni-bielefeld.de/record/1776272
https://pub.uni-bielefeld.de/download/1776272/2312131
eng
info:eu-repo/semantics/altIdentifier/doi/10.1007/BF01555877
info:eu-repo/semantics/altIdentifier/issn/0170-9739
info:eu-repo/semantics/altIdentifier/issn/1434-6052
info:eu-repo/semantics/altIdentifier/wos/A1989T684400024
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1776277
2018-07-24T12:58:28Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Polyakov loop distributions near deconfinement in SU(2) lattice gauge theory
Engels, Jürgen
Fingberg, Jochen
Weber, M.
ddc:530
Engels J, Fingberg J, Weber M. Polyakov loop distributions near deconfinement in SU(2) lattice gauge theory. <em>Zeitschrift für Physik, C: Particles and Fields</em>. 1988;41(3):513-519.
The distribution function of the Polyakov loop is investigated on a 163×3 lattice in the neighbourhood of the deconfinement transition of SU(2) gauge theory. We find, that well above the transition the distribution is a Gaussian; when the coupling approaches the critical point it is modified due to phase flip attempts of the system. Corresponding distributions for the plaquettes remain, however, Gaussian. For one coupling close to the transition we study the distributions on 83, 123 and 183×4 lattices and show that strong finite size effects are present. Using the maximum values of the Gaussian parts of the distributions we construct a more physical (and therefore scaling) order parameter whose critical exponent is in excellent agreement with the universality hypothesis.
Springer Science and Business Media LLC
1988
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17762771
https://pub.uni-bielefeld.de/record/1776277
https://pub.uni-bielefeld.de/download/1776277/2312132
eng
info:eu-repo/semantics/altIdentifier/doi/10.1007/BF01585638
info:eu-repo/semantics/altIdentifier/issn/0170-9739
info:eu-repo/semantics/altIdentifier/issn/1434-6052
info:eu-repo/semantics/altIdentifier/wos/A1988R444800020
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1776281
2018-07-24T12:59:35Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
On the existence of additional zero temperature phase transitions in SU(2) lattice gauge theory
Engels, Jürgen
Seixas, J.
ddc:530
Engels J, Seixas J. On the existence of additional zero temperature phase transitions in SU(2) lattice gauge theory. <em>Physics Letters, B</em>. 1988;206(2):295-298.
Elsevier BV
1988
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17762816
https://pub.uni-bielefeld.de/record/1776281
https://pub.uni-bielefeld.de/download/1776281/2312133
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/0370-2693(88)91509-2
info:eu-repo/semantics/altIdentifier/issn/0370-2693
info:eu-repo/semantics/altIdentifier/wos/A1988N799400023
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1776290
2018-07-24T12:59:01Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Critical behaviour in baryonic matter
Berg, B.
Engels, Jürgen
Kehl, E.
Waltl, B.
Satz, Helmut
ddc:530
Berg B, Engels J, Kehl E, Waltl B, Satz H. Critical behaviour in baryonic matter. <em>Zeitschrift für Physik, C: Particles and Fields</em>. 1986;31(1):167-174.
Springer Science and Business Media LLC
1986
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17762904
https://pub.uni-bielefeld.de/record/1776290
https://pub.uni-bielefeld.de/download/1776290/2312134
eng
info:eu-repo/semantics/altIdentifier/doi/10.1007/BF01559608
info:eu-repo/semantics/altIdentifier/issn/0170-9739
info:eu-repo/semantics/altIdentifier/issn/1434-6052
info:eu-repo/semantics/altIdentifier/wos/A1986C465100023
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1776295
2018-07-24T12:59:01Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Deconfinement for SU(2) gauge theory in 2+1 dimensions
Engels, Jürgen
Kehl, E.
Satz, Helmut
Waltl, B.
ddc:530
Engels J, Kehl E, Satz H, Waltl B. Deconfinement for SU(2) gauge theory in 2+1 dimensions. <em>Physical review letters</em>. 1985;55(26):2839-2841.
By calculating Polyakov-loop averages on a 60 2×2 lattice, we determine the critical exponent of deconfinement for SU(2) gauge theory in 2+1 dimensions. Universality arguments predict it to be the same as the critical exponent [beta]=(1/8) for the spontaneous magnetization in the two-dimensional Ising model. Our results are in good accord with this prediction.
American Physical Society (APS)
1985
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17762950
https://pub.uni-bielefeld.de/record/1776295
https://pub.uni-bielefeld.de/download/1776295/2312135
eng
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevLett.55.2839
info:eu-repo/semantics/altIdentifier/issn/0031-9007
info:eu-repo/semantics/altIdentifier/wos/A1985AWD9400003
info:eu-repo/semantics/altIdentifier/pmid/10032252
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1776299
2018-07-24T12:58:05Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Deconfinement at finite baryon number density
Engels, Jürgen
Satz, Helmut
ddc:530
Engels J, Satz H. Deconfinement at finite baryon number density. <em>Physics Letters, B</em>. 1985;159(2-3):151-154.
Elsevier BV
1985
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17762991
https://pub.uni-bielefeld.de/record/1776299
https://pub.uni-bielefeld.de/download/1776299/2312136
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/0370-2693(85)90876-7
info:eu-repo/semantics/altIdentifier/issn/0370-2693
info:eu-repo/semantics/altIdentifier/wos/A1985ASE0100017
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1776301
2018-07-24T12:59:35Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Finite-temperature lattice QCD with Wilson fermions
Çelik, T.
Engels, Jürgen
Satz, Helmut
ddc:530
Çelik T, Engels J, Satz H. Finite-temperature lattice QCD with Wilson fermions. <em>Nuclear Physics, B</em>. 1985;256:670-686.
Elsevier BV
1985
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17763019
https://pub.uni-bielefeld.de/record/1776301
https://pub.uni-bielefeld.de/download/1776301/2312137
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/0550-3213(85)90414-6
info:eu-repo/semantics/altIdentifier/issn/0550-3213
info:eu-repo/semantics/altIdentifier/wos/A1985ANV8700007
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1776304
2018-07-24T12:58:28Z
book_chapter
doc-type:bookPart
ddc:530
book_chapterFtxt
open_access
Finite temperature QCD
Engels, Jürgen
Bleuler, K.
ddc:530
Engels J. Finite temperature QCD. In: Bleuler K, ed. <em>Quarks and Nuclear Structure: Proceedings of the 3rd Klaus Erkelenz Symposium held at Bad Honnef, June 13–16,1983</em>. Lecture Notes in Physics, 197. Berlin [u.a.]: Springer; 1984: 39-56.
A review of finite temperature lattice calculations for quantum chromodynamics is given. We show how the thermodynamic quantities can be evaluated by Monte Carlo methods, once finite temperature field theory has been formulated on a lattice. The existing results for chemical potential zero and in quenched approximation are discussed. They exhibit a clear first order transition for SU(3) lattice QCD and probably a second order transition for SU(2) lattice QCD. The chiral and deconfinement transitions are coinciding in the quenched approximation.
Springer
1984
http://purl.org/coar/resource_type/c_3248
info:eu-repo/semantics/bookPart
doc-type:bookPart
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17763047
https://pub.uni-bielefeld.de/record/1776304
https://pub.uni-bielefeld.de/download/1776304/2312138
eng
info:eu-repo/semantics/altIdentifier/doi/10.1007/3-540-12922-7_179
info:eu-repo/semantics/altIdentifier/isbn/978-3-540-12922-6
info:eu-repo/semantics/altIdentifier/wos/A1984SV64800003
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1776306
2018-07-24T12:59:35Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
The status of deconfinement in SU(3) gauge theory
Çelik, T.
Engels, Jürgen
Satz, Helmut
ddc:530
Çelik T, Engels J, Satz H. The status of deconfinement in SU(3) gauge theory. <em>Zeitschrift für Physik, C: Particles and Fields</em>. 1984;22(3):301-306.
We assess the reliability of present lattice calculations in SU(3) Yang-Mills theory at finite physical temperature. There are clear deviations from asymptotic scaling, but the ratios of deconfinement temperature, latent heat and string tension are found to remain constant under lattice changes.
Springer Science and Business Media LLC
1984
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17763063
https://pub.uni-bielefeld.de/record/1776306
https://pub.uni-bielefeld.de/download/1776306/2312139
eng
info:eu-repo/semantics/altIdentifier/doi/10.1007/BF01575796
info:eu-repo/semantics/altIdentifier/issn/0170-9739
info:eu-repo/semantics/altIdentifier/issn/1434-6052
info:eu-repo/semantics/altIdentifier/wos/A1984SP36900015
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1776309
2018-07-24T12:58:28Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Deconfinement and virtual quark loops
Çelik, T.
Engels, Jürgen
Satz, Helmut
ddc:530
Çelik T, Engels J, Satz H. Deconfinement and virtual quark loops. <em>Physics Letters, B</em>. 1983;133(6):427-432.
Elsevier BV
1983
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17763098
https://pub.uni-bielefeld.de/record/1776309
https://pub.uni-bielefeld.de/download/1776309/2312140
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/0370-2693(83)90821-3
info:eu-repo/semantics/altIdentifier/issn/0370-2693
info:eu-repo/semantics/altIdentifier/wos/A1983RY91500013
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1776312
2018-07-24T12:59:17Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
The latent heat of deconfinement in SU(3) Yang-Mills theory
Çelik, T.
Engels, Jürgen
Satz, Helmut
ddc:530
Çelik T, Engels J, Satz H. The latent heat of deconfinement in SU(3) Yang-Mills theory. <em>Physics Letters, B</em>. 1983;129(5):323-327.
Elsevier BV
1983
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17763127
https://pub.uni-bielefeld.de/record/1776312
https://pub.uni-bielefeld.de/download/1776312/2312141
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/0370-2693(83)90675-5
info:eu-repo/semantics/altIdentifier/issn/0370-2693
info:eu-repo/semantics/altIdentifier/wos/A1983RK55200010
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1776315
2018-07-24T12:59:02Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
The deconfinement transition for quenched SU(2) lattice QCD with Wilson fermions
Engels, Jürgen
Karsch, Frithjof
ddc:530
Engels J, Karsch F. The deconfinement transition for quenched SU(2) lattice QCD with Wilson fermions. <em>Physics Letters, B</em>. 1983;125(6):481-486.
Elsevier BV
1983
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17763155
https://pub.uni-bielefeld.de/record/1776315
https://pub.uni-bielefeld.de/download/1776315/2312142
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/0370-2693(83)91331-X
info:eu-repo/semantics/altIdentifier/issn/0370-2693
info:eu-repo/semantics/altIdentifier/wos/A1983QV51900013
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1776317
2018-07-24T12:59:17Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
The order of the deconfinement transition in SU(3) Yang-Mills theory
Çelik, T.
Engels, Jürgen
Satz, Helmut
ddc:530
Çelik T, Engels J, Satz H. The order of the deconfinement transition in SU(3) Yang-Mills theory. <em>Physics Letters, B</em>. 1983;125(5):411-414.
We study the finite temperature deconfinement transition in SU(3) Yang-Mills theory, using a high statistics Monte Carlo evaluation on a 83 × 3 lattice. It is shown to be of first order: at the critical temperature, there is a clear two-state signal; above and below, we have hysteresis behaviour.
Elsevier BV
1983
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17763174
https://pub.uni-bielefeld.de/record/1776317
https://pub.uni-bielefeld.de/download/1776317/2312143
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/0370-2693(83)91314-X
info:eu-repo/semantics/altIdentifier/issn/0370-2693
info:eu-repo/semantics/altIdentifier/wos/A1983QV19800015
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1776320
2018-07-24T12:59:35Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Gauge field thermodynamics for the SU(2) Yang-Mills system
Engels, Jürgen
Karsch, Frithjof
Satz, Helmut
Montvay, I.
ddc:530
Engels J, Karsch F, Satz H, Montvay I. Gauge field thermodynamics for the SU(2) Yang-Mills system. <em>Nuclear Physics, B</em>. 1982;205(4):545-577.
Elsevier BV
1982
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17763209
https://pub.uni-bielefeld.de/record/1776320
https://pub.uni-bielefeld.de/download/1776320/2312144
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/0550-3213(82)90077-3
info:eu-repo/semantics/altIdentifier/issn/0550-3213
info:eu-repo/semantics/altIdentifier/wos/A1982PA64300003
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1776323
2018-07-24T12:58:28Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
The high-temperature behaviour of lattice QCD with fermions
Engels, Jürgen
Karsch, Frithjof
Satz, Helmut
ddc:530
Engels J, Karsch F, Satz H. The high-temperature behaviour of lattice QCD with fermions. <em>Physics Letters, B</em>. 1982;113(5):398-404.
Elsevier BV
1982
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17763237
https://pub.uni-bielefeld.de/record/1776323
https://pub.uni-bielefeld.de/download/1776323/2312145
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/0370-2693(82)90773-0
info:eu-repo/semantics/altIdentifier/issn/0370-2693
info:eu-repo/semantics/altIdentifier/wos/A1982NX07600012
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1776325
2018-07-24T12:59:35Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Finite size effects in euclidean lattice thermodynamics for non-interacting Bose and Fermi systems
Engels, Jürgen
Karsch, Frithjof
Satz, Helmut
ddc:530
Engels J, Karsch F, Satz H. Finite size effects in euclidean lattice thermodynamics for non-interacting Bose and Fermi systems. <em>Nuclear Physics, B</em>. 1982;205(2):239-252.
In the Monte Carlo simulation of QCD, the euclidean form of the partition function is evaluated on a finite lattice. We use this method to calculate the partition function for non-interacting Bose and Fermi fields. Here the expressions on the lattice can be evaluated in closed form and the continuum limit is well-known; this provides us with a measure for finite lattice size effects in such approaches.
Elsevier BV
1982
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17763252
https://pub.uni-bielefeld.de/record/1776325
https://pub.uni-bielefeld.de/download/1776325/2312146
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/0550-3213(82)90387-X
info:eu-repo/semantics/altIdentifier/issn/0550-3213
info:eu-repo/semantics/altIdentifier/wos/A1982NU90200007
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1776327
2018-07-24T12:59:02Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Glueball mass estimate from finite temperature SU(2) lattice studies
Engels, Jürgen
Karsch, Frithjof
Satz, Helmut
Montvay, I.
ddc:530
Engels J, Karsch F, Satz H, Montvay I. Glueball mass estimate from finite temperature SU(2) lattice studies. <em>Physics Letters, B</em>. 1981;102(5):332-336.
Elsevier BV
1981
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17763270
https://pub.uni-bielefeld.de/record/1776327
https://pub.uni-bielefeld.de/download/1776327/2312147
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/0370-2693(81)90629-8
info:eu-repo/semantics/altIdentifier/issn/0370-2693
info:eu-repo/semantics/altIdentifier/wos/A1981LV92500008
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1776330
2018-07-24T12:58:28Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
High temperature SU(2) gluon matter of the lattice
Engels, Jürgen
Karsch, Frithjof
Satz, Helmut
Montvay, I.
ddc:530
Engels J, Karsch F, Satz H, Montvay I. High temperature SU(2) gluon matter of the lattice. <em>Physics Letters, B</em>. 1981;101(1-2):89-94.
We calculate by Monte Carlo simulation on the lattice the energy density [epsilon] of an SU(2) Yang-Mills system at finite physical temperature. First, we study the high temperature form of [epsilon], showing that the conventional euclidean lattice formulation converges to the parameter-free Stefan-Boltzmann limit of a free gluon gas in the continuum. Secondly, we show that the specific heat of gluon matter exhibits a sharp peak at the transition point from the confined phase to the color-screened gluon gas. The resulting transition temperature is found to be 210 ± 10 MeV.
Elsevier BV
1981
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17763301
https://pub.uni-bielefeld.de/record/1776330
https://pub.uni-bielefeld.de/download/1776330/2312148
eng
info:eu-repo/semantics/altIdentifier/doi/10.1016/0370-2693(81)90497-4
info:eu-repo/semantics/altIdentifier/issn/0370-2693
info:eu-repo/semantics/altIdentifier/wos/A1981LP61000022
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1776333
2018-07-24T12:58:05Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Correlation with large transverse momentum photons and the gluon structure function
Baier, Rudolf
Engels, Jürgen
Petersson, Bengt
ddc:530
Baier R, Engels J, Petersson B. Correlation with large transverse momentum photons and the gluon structure function. <em>Zeitschrift für Physik, C: Particles and Fields</em>. 1980;6(4):309-316.
Springer Science and Business Media LLC
1980
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17763337
https://pub.uni-bielefeld.de/record/1776333
https://pub.uni-bielefeld.de/download/1776333/2312149
eng
info:eu-repo/semantics/altIdentifier/doi/10.1007/BF01474805
info:eu-repo/semantics/altIdentifier/issn/0170-9739
info:eu-repo/semantics/altIdentifier/issn/1434-6052
info:eu-repo/semantics/altIdentifier/wos/A1980KU48300004
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1776347
2018-07-24T12:58:28Z
conference
doc-type:conferenceObject
ddc:530
conferenceFtxt
open_access
The SMC experiment
Baum, Günter
Althoff, Karlheinz
Spin
Hochenergiephysik
ddc:530
Baum G. The SMC experiment. In: Althoff K, ed. <em>High energy spin physics: proceedings of the 9th international symposium held at Bonn, FRG, 6 - 15 September 1990</em>. Berlin: Springer; 1990: 407-410.
Springer
1990
http://purl.org/coar/resource_type/c_5794
info:eu-repo/semantics/conferenceObject
doc-type:conferenceObject
text
https://nbn-resolving.org/urn:nbn:de:0070-bipr-12111
https://pub.uni-bielefeld.de/record/1776347
https://pub.uni-bielefeld.de/download/1776347/2312159
eng
info:eu-repo/semantics/altIdentifier/isbn/3-540-54127-6
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1776348
2018-07-24T12:59:17Z
conference
doc-type:conferenceObject
ddc:530
conferenceFtxt
open_access
Comparison of polarized target materials in different magnetic fields
Trentalange, S.
Baum, Günter
Bunyatova, E.
Brandt, B. van den
Hautle, P.
Ent, R.
Konter, J. A.
Mango, S.
Niinikoski, T.
Rijllart, A.
Takala, S.
Weßler, M.
Althoff, Karlheinz
Hochenergiephysik
Spin
ddc:530
Trentalange S, Baum G, Bunyatova E, et al. Comparison of polarized target materials in different magnetic fields. In: Althoff K, ed. <em>High energy spin physics: proceedings of the 9th international symposium held at Bonn, FRG, 6 - 15 September 1990</em>. Vol volume 2. Berlin: Springer; 1990: 325-327.
Springer
1990
http://purl.org/coar/resource_type/c_5794
info:eu-repo/semantics/conferenceObject
doc-type:conferenceObject
text
https://nbn-resolving.org/urn:nbn:de:0070-bipr-12128
https://pub.uni-bielefeld.de/record/1776348
https://pub.uni-bielefeld.de/download/1776348/2312160
eng
info:eu-repo/semantics/altIdentifier/isbn/3-540-54127-6
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1776384
2018-07-24T12:59:02Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
A spin flipper for reversal of polarisation in a thermal atomic beam
Schröder, W.
Baum, Günter
ddc:530
Schröder W, Baum G. A spin flipper for reversal of polarisation in a thermal atomic beam. <em>J.Phys. E</em>. 1983;16(1):52-56.
By using the method of diabatic passage, we developed a spin flipper which allows a rapid and convenient reversal of the atomic spins. The spin flipper was tested with a polarised lithium atomic beam by analysing the atomic beam polarisation with the help of a second spin-flip region and a sextupole magnet. The reversal efficiency was measured to be 0.98 which is in agreement with our calculation. The flipper is especially useful in low-energy electron-atom crossed-beam collision studies. The experimental arrangement also allows a precise determination of the atomic beam polarisation.
IOP Publishing
1983
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17763844
https://pub.uni-bielefeld.de/record/1776384
https://pub.uni-bielefeld.de/download/1776384/2312179
eng
info:eu-repo/semantics/altIdentifier/doi/10.1088/0022-3735/16/1/011
info:eu-repo/semantics/altIdentifier/issn/0022-3735
info:eu-repo/semantics/altIdentifier/wos/A1983PV55300011
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1776388
2018-07-24T12:58:05Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Measurement of spin asymmetries in the electron impact ionisation of alkali atoms
Baum, Günter
Moede, M.
Raith, Wilhelm
Schröder, W.
ddc:530
Baum G, Moede M, Raith W, Schröder W. Measurement of spin asymmetries in the electron impact ionisation of alkali atoms. <em>J.Phys. B</em>. 1985;18(3):531-538.
IOP Publishing
1985
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17763887
https://pub.uni-bielefeld.de/record/1776388
https://pub.uni-bielefeld.de/download/1776388/2312181
eng
info:eu-repo/semantics/altIdentifier/doi/10.1088/0022-3700/18/3/027
info:eu-repo/semantics/altIdentifier/issn/0022-3700
info:eu-repo/semantics/altIdentifier/wos/A1985ABV2000027
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
oai:pub.uni-bielefeld.de:1776402
2018-07-24T12:59:35Z
journal_article
doc-type:article
ddc:530
journal_articleFtxt
open_access
Measurement of spin dependence in low-energy elastic scattering of electrons from lithium atoms
Baum, Günter
Moede, M.
Raith, Wilhelm
Sillmen, U.
ddc:530
Baum G, Moede M, Raith W, Sillmen U. Measurement of spin dependence in low-energy elastic scattering of electrons from lithium atoms. <em>Phys.Rev.Lett.</em> 1986;57(15):1855-1858.
The energy dependence of the spin asymmetry in elastic scattering of polarized electrons from Li atoms has been studied for scattering angles of 65°, 90°, and 107.5° and collision energies from 1 to 30 eV. The measured asymmetry shows variations between its extreme values of + 1 and - 1/3, and its behavior can best be described by close-coupling calculations.
American Physical Society (APS)
1986
http://purl.org/coar/resource_type/c_6501
info:eu-repo/semantics/article
doc-type:article
text
https://nbn-resolving.org/urn:nbn:de:0070-pub-17764027
https://pub.uni-bielefeld.de/record/1776402
https://pub.uni-bielefeld.de/download/1776402/2312190
eng
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevLett.57.1855
info:eu-repo/semantics/altIdentifier/issn/0031-9007
info:eu-repo/semantics/altIdentifier/wos/A1986E304500012
info:eu-repo/semantics/altIdentifier/pmid/10033567
info:eu-repo/semantics/openAccess
https://rightsstatements.org/vocab/InC/1.0/
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