Results 221 to 230 of about 21,237 (271)
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Physica B: Condensed Matter, 1995
Abstract We present an X-ray absorption study of zinc selenide at the Zn and Se K-edges. The analysis of the X-ray absorption fine structure (XAFS) was done in the framework of the multiple-scattering theory. The total XAFS signals have been obtained; they are in good agreement with the experimental data.
D. Diop, R. Grisenti
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Abstract We present an X-ray absorption study of zinc selenide at the Zn and Se K-edges. The analysis of the X-ray absorption fine structure (XAFS) was done in the framework of the multiple-scattering theory. The total XAFS signals have been obtained; they are in good agreement with the experimental data.
D. Diop, R. Grisenti
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Molecular Dynamics Simulations and XAFS (MD-XAFS)
2016MD-XAFS (Molecular Dynamics X-ray Adsorption Fine Structure) makes the connection between simulation techniques that generate an ensemble of molecular configurations and the direct signal observed from X-ray measurement. Due to the fact that the signal is most sensitive to the structure nearest to a photoelectron source, an understanding of XAFS signal
Gregory K. Schenter, John L. Fulton
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XAFS in dilute magnetic semiconductors
Dalton Transactions, 2013X-Ray absorption fine structure (XAFS) spectroscopy has experienced a rapid development in the last four decades and has proved to be a powerful structure characterization technique in the study of local environments in condensed matter. In this article, we first introduce the XAFS basic principles including theory, data analysis and experiment in some
Zhihu, Sun +5 more
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Reviews in Mineralogy and Geochemistry, 2014
The basic physical principles of X-ray Absorption Fine-Structure (XAFS) are presented. XAFS is an element-specific spectroscopy in which measurements are made by tuning the X-ray energy at and above a selected core-level binding energy of a specified element.
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The basic physical principles of X-ray Absorption Fine-Structure (XAFS) are presented. XAFS is an element-specific spectroscopy in which measurements are made by tuning the X-ray energy at and above a selected core-level binding energy of a specified element.
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Physica B: Condensed Matter, 1989
Abstract The transferability concept is central to all practical applications of XAFS for structure determination, both experimental and theoretical. In this paper the question of transferability in EXAFS is re-examines. Physical arguments ndicate that transferability is much less accurate for multiple scattering than for single scattering. Therefore
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Abstract The transferability concept is central to all practical applications of XAFS for structure determination, both experimental and theoretical. In this paper the question of transferability in EXAFS is re-examines. Physical arguments ndicate that transferability is much less accurate for multiple scattering than for single scattering. Therefore
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Japanese Journal of Applied Physics, 1993
The ultimate information content of XAFS is discussed. The practical limits for obtaining this information are indicated. The most general case is considered where nothing is known about the structure and there is no orientation dependence of the XAFS with respect to the sample.
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The ultimate information content of XAFS is discussed. The practical limits for obtaining this information are indicated. The most general case is considered where nothing is known about the structure and there is no orientation dependence of the XAFS with respect to the sample.
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Physica B: Condensed Matter, 1995
Abstract X-ray-absorption near edge structure (XANES) poses many theoretical challenges and a general quantitative theory remains elusive. We have studied structural contributions to XANES based on high-order multiple-scattering (MS) calculations, including X-ray polarization. Ab initio MS calculations of XANES are presented using a code FEFF6X, that
J.J. Rehr +3 more
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Abstract X-ray-absorption near edge structure (XANES) poses many theoretical challenges and a general quantitative theory remains elusive. We have studied structural contributions to XANES based on high-order multiple-scattering (MS) calculations, including X-ray polarization. Ab initio MS calculations of XANES are presented using a code FEFF6X, that
J.J. Rehr +3 more
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XAFS applications in semiconductors
Nuclear Science and Techniques, 2006X-ray absorption fine structure (XAFS) has experienced a rapid development in the last three decades and has proven to be a powerful structural characterization technique nowadays. In this review, the XAFS basic principles including the theory, the data analysis, and the experiments have been introduced in detail.
S WEI +5 more
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2010
X-ray absorption fine structure spectroscopy (XAFS) is a powerful and versatile technique for studying structures of materials in chemistry, physics, biology and other fields. This textbook is a comprehensive, practical guide to carrying out and interpreting XAFS experiments.
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X-ray absorption fine structure spectroscopy (XAFS) is a powerful and versatile technique for studying structures of materials in chemistry, physics, biology and other fields. This textbook is a comprehensive, practical guide to carrying out and interpreting XAFS experiments.
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