Directional fine structure in absorption of white x rays: A tomographic interpretation
Directional fine structure in absorption of white x rays: A tomographic interpretation
复制标题
吸收白色 X 射线的定向精细结构：断层扫描解释
DOI：
10.1103/physrevb.74.184116
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发表时间：
2006
影响因子：
3.7
通讯作者：
M. Szymoński
中科院分区：
文献类型：
--
作者：
P. Korecki;M. Tolkiehn;D. Novikov;G. Materlik;M. Szymoński
We discuss directional fine structure in absorption of white x rays for tomographic imaging of crystal structure at the atomic level. The interference between a direct x-ray beam and the secondary waves coherently scattered inside a specimen modifies the total wave field at the position of the absorbing atoms. For a white x-ray beam, the wave field variations cancel out by energy integration for all directions, except for the near forward scattering components, coinciding with the incident beam. Therefore, two-dimensional patterns of the angular-dependent fine structure in absorption of white x rays can be interpreted as real-space projections of atomic structure. In this work, we present a theory describing the directional fine structure in white x-ray absorption and a tomographic approach for crystal structure retrieval developed on its basis. The tomographic algorithm is applied to the experimental x-ray absorption data recorded for GaP crystals.
影响因子：
56.9
作者：
HENDRICKSON, WA
通讯作者：
HENDRICKSON, WA