Results 241 to 250 of about 28,295 (284)
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2016
The functions of solid materials are highly related to their structures, and the visualization of heterogeneous structures of solid materials is one of the interesting targets for XAFS analysis. Conventional XAFS measurement is performed by micron-size X-ray beams, and it can provide average structural information of a target sample in a beam spot.
Mizuki Tada, Nozomu Ishiguro
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The functions of solid materials are highly related to their structures, and the visualization of heterogeneous structures of solid materials is one of the interesting targets for XAFS analysis. Conventional XAFS measurement is performed by micron-size X-ray beams, and it can provide average structural information of a target sample in a beam spot.
Mizuki Tada, Nozomu Ishiguro
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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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A novel SAXS/XRD/XAFS combined technique for in-situ time-resolved simultaneous measurements
Nano Reseach, 2022Zhonghua Wu +11 more
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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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2016
Three-dimensional imaging of a solid sample is attractive for high-throughput and non-destructive characterization methods, and computed tomography (CT) is well developed and widely used for several analytical methods such as electron microscopy.
Mizuki Tada, Hirosuke Matsui
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Three-dimensional imaging of a solid sample is attractive for high-throughput and non-destructive characterization methods, and computed tomography (CT) is well developed and widely used for several analytical methods such as electron microscopy.
Mizuki Tada, Hirosuke Matsui
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2016
Changes of structure and chemical states of catalysts have been successfully observed with XAFS under reaction conditions. Nowadays, a XAFS spectrum can be obtained even within several milliseconds by using quick XAFS (QXAFS) and dispersive XAFS (DXAFS) techniques.
Toshihiko Yokoyama, Yohei Uemura
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Changes of structure and chemical states of catalysts have been successfully observed with XAFS under reaction conditions. Nowadays, a XAFS spectrum can be obtained even within several milliseconds by using quick XAFS (QXAFS) and dispersive XAFS (DXAFS) techniques.
Toshihiko Yokoyama, Yohei Uemura
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Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1992
Abstract X-ray absorption fine structure (XAFS) spectroscopy is element specific, enabling individual pair distribution functions to be extracted for complex materials. Theoretical advances in multiple scattering have lead to a complete description of both near edge structure and extended fine structure (EXAFS). As a result, the radii and occupancies
B.R. Dobson, G.N. Greaves
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Abstract X-ray absorption fine structure (XAFS) spectroscopy is element specific, enabling individual pair distribution functions to be extracted for complex materials. Theoretical advances in multiple scattering have lead to a complete description of both near edge structure and extended fine structure (EXAFS). As a result, the radii and occupancies
B.R. Dobson, G.N. Greaves
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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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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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