Probabilities for radiative vacancy transfer from Li (i=1, 2, 3) sub-shells to the M, N and higher shells for elements with 77≤Z≤92

Abstract

Abstract The probabilities for transfer of the Li (i=1, 2, 3) subshell vacancy to the M, N and higher shells through radiative decay, η L i J ( R ) , have been deduced for the elements with 77≤Z≤92 using the measured L X-ray production cross-sections at (i) the 59.54 keV γ-rays such that B L 1 E inc B K and (ii) the K X-rays of a suitable secondary target chosen such that B L 3 E K α B L 2 and B L 1 / L 2 E K β B K ; where B K / L i is the K shell/Li subshell ionisation threshold of the target element. The deduced probabilities are compared with those calculated using the radiative and nonradiative transition rates based on the Dirac–Fock (DF) and the relativistic Dirac–Hartree–Slater (RDHS) calculations, respectively.