Mater.Phys.Mech.(MPM)
No 1, Vol. 36, 2018, pages 92-99

INVESTIGATION OF THE POSSIBILITY OF IMPROVING THE X-RAY FLUORESCENCE
SPECTROMETER ANALYTICAL CHARACTERISTICS DUE TO
USING THE SUPERFINE BERYLLIUM FOILS

V.V. Mishin, I.A. Shishov, P.P. Kiselev, E.V. Matsinkevich, A.V. Rudnev, K.V. Bukin

Abstract

Studies were made the possibilities of increasing the wave-dispersive X-ray fluorescence spectrometer analytical characteristics due to using the superfine beryllium foils 5-8 µm thick in the X-ray detector. Investigations by the example of spectrometer SPECTROSCAN MAX-GVM showed that the decrease of foil thickness can significantly increase the spectrometer analytical characteristics in the determination of light elements (sodium and magnesium). It has been established what count rate increases 8.5 times for sodium and 4.6 times for magnesium due to using the X-ray windows with thickness of 5 and 8 .m. Reducing of X-ray window thickness can be achieved by using beryllium foils obtained by severe cold plastic deformation. Such foils have increased plasticity, which allows reducing the X-ray window thickness without spectrometer reliability decreasing.

Keywords: x-ray spectroscopy analysis; spectrometer; x-ray detector; thin beryllium foils; x-rays transmission.

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