X-ray radiation of low duty X-ray tube converted by primary radiation filters excites the fluorescence radiation of atoms of the sample under examination. Radiation flows (primary radiation scattered on the sample and secondary fluorescence radiation) comes in analyzing crystal and fluorescence radiation of sulphur atoms (SKa) is reflected at a certain angle.
The intensity of sulphur atom`s fluorescence irradiation detected by proportional gas counter is proportional to the sulphur concentration in the sample under examination..
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