The energy dispersive scheme of X‐ray fluorescence analysis with a crystal polarizer and polycapillary optics

The efficiency of the polarization scheme based on polycapillary optics and a diamond crystal polarizer was demonstrated. The scheme provides suppression of the background of scattered radiation in measuring X‐ray fluorescence spectra. A quasi‐parallel X‐ray beam with an angular divergence of 4.2 mr...

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Bibliographic Details
Published in:X-ray spectrometry 2017-11, Vol.46 (6), p.548-553
Main Authors: Turyanskiy, A.G., Gizha, S.S., Senkov, V.M., Stanishevskiy, Ya.M.
Format: Article
Language:English
Subjects:
Alpha rays
Anodic polarization
Background radiation
Crystals
Diamonds
Diffraction
Divergence
Fluorescence
Line spectra
Monochromatization
Optics
Polarization
Polarizers
X ray fluorescence analysis
X-ray fluorescence
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Summary:The efficiency of the polarization scheme based on polycapillary optics and a diamond crystal polarizer was demonstrated. The scheme provides suppression of the background of scattered radiation in measuring X‐ray fluorescence spectra. A quasi‐parallel X‐ray beam with an angular divergence of 4.2 mrad was formed by a microfocus source with a copper anode and polycapillary half‐lens. Simultaneous polarization and monochromatization of radiation was obtained with a crystal of natural diamond, which was set at the diffraction reflection (113). The degree of polarization of CuKα1 spectral line and the maximum radiation flux were respectively equal to 99.86% and 5 · 106 photon/s. In the direction orthogonal to the plane of diffraction, the maximum attenuation of the background was up to 19 dB.
ISSN:0049-8246
1097-4539
DOI:10.1002/xrs.2794