L X-ray fluorescence cross sections of heavy elements excited by 15.20, 16.02, 23.62 and 24.68 keV photons

Abstract

L X-ray fluorescence cross sections have been measured for the elements La, Ce, Gd, Er and Au using photon energies of 15.20, 16.02, 23.62 and 24.68 keV. Measurements have been performed using an X-ray tube with a secondary exciter system as the excitation source. The X-ray tube with a secondary target arrangement was used to obtain high intensity with a high degree of monochromatization. By using an X-ray tube it is possible to measure X-ray fluorescence cross sections even for low-intensity X-rays (L 1). Experimental results have been compared with the theoretically calculated values of L X-ray fluorescence cross sections. A fairly good correspondence is observed between experimental and calculated values.