科研之友
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摘要
Expressions for the x-ray attenuation factor in homogeneous samples with circular cross sections (cylinders and spheres) have been derived. Depending on sample radius, detection geometry and absorption properties, the values of the attenuation factor may significantly differ from those obtained from the commonly assigned model for sample geometry: the semi-infinite slab. As shown, the obtained expressions may serve as a base for more elaborate correction procedures relating to self-absorption in EXAFS fluorescence measurements.
- 出版日期2012-12
