Role of Petrogenic Elements in the Excitation of X-Ray Fluorescence of Fluorine

Abstract

Specific features of the excitation of the X-ray fluorescence of fluorine in the presence of petrogenic elements are studied experimentally. The dependence of the intensity of the FKα-line on the atomic number of macroelements entering the composition of rocks is studied. It is found that the major contribution to the intensity of the FKα-line due to the effect of selective excitation is made by sodium fluorescence. The dependence of the intensity of the FKα-line on elements with atomic numbers 11 < Z ≤ 26 exhibits a maximum in the region Z ≈ 20–22. This is due to the contribution of photo and Auger electrons of the listed elements. The obtained experimental data indicate that the yield of X-ray fluorescence of fluorine depends on the compound containing fluorine. The optimum operation mode of the X-ray tube was chosen for the determination of the FKα-line.