Zobrazeno 1 - 10
of 75
pro vyhledávání: '"J. van Elp"'
Autor:
J. van Elp, Arata Tanaka
Publikováno v:
Physical Review B. 60:5331-5339
It has been generally accepted that the threshold structure observed in the oxygen K edge X-ray absorption spectrum in 3d transition metal oxides represents the electronic structure of the 3d transition metal. There is, however, no consensus about th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::890b02de6cf5f85cfcb36e66f9c5e50d
https://doi.org/10.1103/physrevb.60.5331
https://doi.org/10.1103/physrevb.60.5331
Publikováno v:
Physical Review B. 59:7931-7936
Using synchrotron radiation, we have measured the Cr ${L}_{2,3}$ absorption edges for the three most common Cr oxidation states. Significant chemical shifts (0.7 eV for a one electron change) are observed between the ${L}_{2,3}$ edges of hexavalent,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e7a166a004efef3ff0eb6ed43aab660c
https://doi.org/10.1103/physrevb.59.7931
https://doi.org/10.1103/physrevb.59.7931
Publikováno v:
Physical Review B. 57:1552-1557
We present polarization dependent x-ray-absorption spectra at nickel L edges of well-characterized La2NiO4+delta single crystals. In the stoichiometric compound the splitting between the x(2)-y(2) ...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2ed237cf335b9f288a9e8d4420389d87
https://doi.org/10.1103/physrevb.57.1552
https://doi.org/10.1103/physrevb.57.1552
Autor:
J. van Elp, B.G Searle
Publikováno v:
Journal of Electron Spectroscopy and Related Phenomena. 86:93-106
The orientation dependence of magnetic circular dichroism (MCD) at soft X-ray absorption edges is discussed for paramagnetic 3d transition metal systems using ligand-field atomic multiplet calculations. Previous calculations have used a magnetic orie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::95069e1c5ac8561eaee59a3ebce6fcea
https://doi.org/10.1016/s0368-2048(97)00051-0
https://doi.org/10.1016/s0368-2048(97)00051-0
Autor:
J. van Elp
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 390:403-408
A low-energy (7–40 eV) modified spherical-grating monochromator (SGM) layout is presented. The expected resolution and photon flux for this low-energy SGM beamline on the storage ring ASTRID are compared with an existing Normal Incidence Monochroma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::13b90ab61a035f7816a27b949452f350
https://doi.org/10.1016/s0168-9002(97)00405-1
https://doi.org/10.1016/s0168-9002(97)00405-1
Autor:
B.G. Searte, J. van Elp
Publikováno v:
Le Journal de Physique IV. 7:C2-445
We present ligand field atomic multiplet calculations to explore the anisotropy of the MCD signal at the 2p transition metal edges of divalent nickel. For Ni in a local D4h symmetry large effects are seen, resulting from a ligand field effect in the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ccec3547f63a607d65c55055b4e15e8d
https://doi.org/10.1051/jp4/1997045
https://doi.org/10.1051/jp4/1997045
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 381:548-553
We present the optical layout, the theoretically expected and experimentally obtained resolution of a plane, folding mirror spherical grating monochromator at the ASTRID storage ring in Denmark. The monochromator has a plane mirror in front of the gr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bf85bf5c5d7d7456613ef99c94bf9341
https://doi.org/10.1016/s0168-9002(96)00764-4
https://doi.org/10.1016/s0168-9002(96)00764-4
Autor:
J. van Elp, G. Peng, Jesper de Claville Christiansen, S. J. George, J. Chen, Stephen P. Cramer, A.T. Young
Publikováno v:
Journal of Electron Spectroscopy and Related Phenomena. 78:225-229
Recent developments in synchrotron radiation sources and end stations make x-ray magnetic circular dichroism a feasible experiment for metalloproteins. This paper describes the experimental apparatus and some results that indicate the promise of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7d0a4f638cc5be6ef8a86926085fe87b
https://doi.org/10.1016/s0368-2048(96)80067-3
https://doi.org/10.1016/s0368-2048(96)80067-3
Autor:
Zhi Hao Zhou, G. Peng, Stephen P. Cramer, M.W.W. Adams, Pradip K. Mascharak, J. van Elp, Narayan Baidya
Publikováno v:
Inorganic Chemistry. 34:2501-2504
The authors have investigated the reduced, thionine-treated at 20 {degrees}C, and thionine-treated at 80 {degrees}C forms of Pyrococcus furiosus [NiFe] hydrogenase using L-edge X-ray absorption spectroscopy. At 20 {degrees}C, the Ni site is apparentl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::388f17291363bd15987159445f3b69c3
https://doi.org/10.1021/ic00114a006
https://doi.org/10.1021/ic00114a006
Publikováno v:
Journal of the American Chemical Society. 117:2515-2519
Iron L-edge X-ray absorption and X-ray magnetic circular dichroism (XMCD) spectroscopy have been used to study the electronic structure of dinuclear iron-oxo complexes with different types of magnetic and electronic interactions between the iron site
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::57457ccf8abe6853f01ecc79473b34b4
https://doi.org/10.1021/ja00114a014
https://doi.org/10.1021/ja00114a014