Energy dependence of photon-induced K? and Kß x-ray production cross-sections for some elements with 42?Z?68 in the energy range 38-80keV

Abstract

The energy dependence of photon-induced K? and Kß x-ray production cross-sections for Mo, Ru, Pd, In, Sb, Cs, La, Pr, Sm, Tb and Er elements has been studied in the energy range of 38-80. keV with secondary excitation method. K x-ray intensities were measured using Energy Dispersive X-Ray Fluorescence (EDXRF) Spectrometry. The measurements have been made by observing the x-ray emissions, with the help of HPGe detector coupled with a multichannel analyzer. The areas of the K? and Kß spectral peaks, as well as the net peak areas, have been determined by a fitting process. The measured K? and Kß x-ray production cross-sections have been compared with calculated theoretical values in this energy regime. The results have been plotted versus excitation energy. The present experimental K? and Kß x-ray production cross-section values for all the elements were in general agreement with the theoretical values calculated using photoionization cross-sections, fluorescence yields and fractional rates based on Hartree-Slater potentials. © 2015 Published by Elsevier Ltd.