Results 241 to 250 of about 284,099 (288)

Extended X-Ray Absorption Fine Structure

1986
The x-ray absorption spectrum of an atom exhibits sharp edges which correspond to the excitation threshold of the core electrons. If the atom is surrounded by other atoms in a condensed phase, then the absorption cross section above the absorption edge is observed to oscillate, exhibiting an often complex structure that can extend for hundreds of ...
D. G. Stearns, M. B. Stearns
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X-ray Absorption Fine Structure Techniques

Particulate Science and Technology, 2010
X-ray absorption fine structure spectroscopy (XAFS) is a unique probe for local atomic and electronic structure of absorbing centers in particulate science, physics, chemistry, and biology. During the past several decades, XAFS has gained dramatic advances in every aspect, including theoretical explanation and experimental applications. In this review,
Zhongrui Li, Enkeleda Dervishi, Viney Saini, Liqiu Zheng, Wensheng Yan, Shiqiang Wei, Yang Xu, Alexandru S. Biris   +7 more
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Multielectron x-ray photoexcitation observations in x-ray-absorption fine-structure background

Physical Review Letters, 1992
Multielectron excitations involving deep and shallow core levels have been identified for the first time in the x-ray-absorption fine-structure (XAFS) energy range for crystalline samples, RbBr and \ensuremath{\beta}-${\mathrm{PbO}}_{2}$. The XAFS oscillations have been fitted and subtracted from the experimental data using theoretical standards.
, Li, , Bridges, , Brown
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Extended X‐Ray Absorption Fine‐Structure Spectroscopy

ChemInform, 2005
AbstractFor Abstract see ChemInform Abstract in Full Text.
J. A. van Bokhoven, T. Ressler, F. M. F. de Groot, G. Knopp‐Gericke   +3 more
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Extended X-Ray Absorption Fine Structure

2018
Extended X-ray absorption fine structure (EXAFS) is a part of X-ray absorption spectroscopy methods to observe local structures of elements of interest.
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Photoconduction extended x-ray-absorption fine structure of GaAs

Physical Review B, 1994
Photoconduction spectra of GaAs samples at photon energies around the Ga and As K edges were measured. Extended x-ray-absorption fine-structure oscillation was observed in these spectra. It is found that the spectrum shape of the photocurrent depends on the sample thickness. A microscopic theory is presented to determine the photoconduction response to
, Hu, , Xie, , Qiao, , Hai, , Jin, , Xian   +5 more
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X-ray Absorption Fine Structure in Glass

1963
When considering such things as electronic behavior or structure-dependent phenomena in solids (including glass), one is faced with the problem of finding ways to make measurements which yield information about events and mechanisms on a microscopic or atomic scale.
W. F. Nelson, I. Siegel, R. Wagner
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X-ray Absorption Fine Structure (XAFS) Spectroscopy

2008
17d.1 X-ray Absorption Fine Structure (XAFS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 605 17d.1.1 Experimental Setup and Data Reduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 606 17d.1.2 EXAFS: Extended X-ray Absorption Fine Structure . . . . . . . . . . . . . . . . . . 608 17d.1.3 XANES: X-ray Absorption
Rothe, J., Leon, A.
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Radial distribution function in x-ray-absorption fine structure

Physical Review B, 1992
It has been argued that, in systems that have disorder too large to be described by a Gaussian, x-ray-absorption fine-structure (XAFS) spectroscopy alone cannot define the radial distribution function (RDF) because of the lack of low-k data. We show that the low-k data can, under certain conditions, be reconstructed using cumulant expansions, which ...
, Stern, , Ma, , Hanske-Petitpierre, , Bouldin   +3 more
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X-ray Absorption Fine Structure - XAFS14: 14th International Conference on X-ray Absorption Fine Structure

2010
14th International Conference on X-ray Absorption Fine Structure, Camerino, Italy, 26-31 July ...
DI CICCO, Andrea, A. Filipponi
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