Measurements of fluorescence and Coster-Kronig yields for 66Dy using synchrotron radiation induced selective photoionization method

Abstract The L shell fluorescence (ω 1 , ω 2 , ω 3 ) and Coster-Kronig (f 12 , f 13 , f 23 ) yields for 66 Dy have been deduced from the L i (i = 1–3) sub-shell X-ray intensities measured at different incident photon energies across its L i absorption edge energies. Three sets of photoionization cross sections used for determination of these yields include two sets of theoretical values based on the non-relativistic Hartree-Fock-Slater model and the self-consistent Dirac-Hartree-Fock model, and the third one is that deduced from independently measured mass attenuation coefficients of 66 Dy. The present experimental fluorescence and Coster-Kronig yields deduced using the self-consistent Dirac-Hartree-Fock model based photoionization cross sections have been found to be in good agreement with the semi-empirical values tabulated by Krause [1] and the Dirac-Hartree-Slater model based values.