Dispersion characteristics of film X-ray monochromators made of pyrolytic graphite

被引:0
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作者
A. G. Turiyanskii
I. V. Pirshin
机构
[1] Russian Academy of Sciences,Lebedev Physical Institute
关键词
Dispersion Characteristic; Pyrolytic Graphite; Diffraction Reflection; Graphite Block; Diamond Plate;
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摘要
The dispersion characteristics of film X-ray monochromators made of pyrolytic graphite (PG) are investigated. The analyzed samples are made of two PG types: HAPG structurally perfect pyrolytic graphite developed for high-resolution X-ray spectroscopy and HOPG pyrolytic graphite used in standard PG monochromators. The schemes for measuring emission spectra and the fine structure of absorption spectra by single X-ray shots are considered. The conditions for recording spectra in a ∼1-keV-wide band including the XAFS and NEXAFS regions are substantiated. The feasibility of independent measurements in a few X-ray spectrum bands is demonstrated. The design of the dispersive element based on a diamond-pyrographitediamond structure for spectrum measurements at superhigh radiation exposures is proposed.
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页码:558 / 567
页数:9
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