Chemical effect on the K shell x-ray fluorescence parameters of some Ce compounds

Chemical effects on the Kβ/Kα x-ray intensity ratios, fluorescence yields wK and vacancy transfer probabilities ηKL for some Ce compounds were investigated. In this study, the samples were excited by 59.54 keV γ-rays from a 5Ci 241Am annular radioactive source. K x-rays emitted by samples were counted by an HPGe detector with a resolution of 182 eV at 5.9 keV. The experimental values were compared with the theoretical and other experimental values. The aim of these measurements was to characterize the dependence of the line position and line width with the chemical environment changes.

► The samples were excited by 59.54 keV γ-rays from a 5Ci 241Am annular radioactive source. ► The chemical environment produces mainly energy shifts and relative intensity variations of emission lines. ► Different bond distances and energies cause different interaction between ligand and central atoms. ► More experimental data are clearly needed, particularly for different symmetries and for chemical compounds.