Measurement of Coster-Kronig vacancy transfer factor of some lanthanides using monoenergetic X-ray photons

Using monoenergetic X-ray photons from Indus-2 synchrotron Centre, the Coster-Kronig vacancy factor(κ) for L3 subshell X-rays of some lanthanide elements such as Gd, Tb, Ho and compounds such as Pr2O3, Pr2(CO3)3·8H2O, Nd2O3, Sm2O3, Sm2(CO3)3.2.85H2O, Sm2(SO4)3·8H2O, Gd2(CO3)3, Tb2O3, Dy2(SO4)3, Ho2O3 and HoF3 have been determined experimentally. By measuring Lα X-ray production cross-section, the L3 subshell fluorescence yield and theoretical values of the L3 subshell photoionization cross-section and level widths, the κ values have been determined. Comparison of the measured experimental κ values with theoretical values indicates that the influence of the chemical environment on κ values in the selected lanthanide targets is not noticeable.