Calculation of Coster-Kronig Enhancement Factors For 60Nd and 61Pm at Different Excitation Energies

Abstract

Coster-Kronig processes are radiationless in which an inner-shell vacancy is transferred from one subshell of an atom to another, both belonging to the same principal shell. Because of the effect of Coster-Kronig transition on L X-ray fluorescence cross sections, an increase in L X-ray intensity were calculated theoretically at different exciation energies for L₁, L₂ and L₃ subshells. These are called as Coster-Kronig enhancement factors and were represented as κ_i(i = α, β, l). These calculated values were compared with other experimental and theoretical values. Calculations showed that when the excitation energies were increased with respect to absorbtion edge energy, L X-ray fluorescence cross sections decrease while Coster-Kronig enhancement factors increase.