The energy dispersive scheme of X‐ray fluorescence analysis with a crystal polarizer and polycapillary optics |
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Authors: | A.G. Turyanskiy S.S. Gizha V.M. Senkov Ya.M. Stanishevskiy |
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Affiliation: | 1. P.N. Lebedev Physical Institute, RAS, Moscow, Russia;2. RUDN University, Moscow, Russia |
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Abstract: | 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. |
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