The effect of Coster-Kronig transitions on the anisotropy of X-ray emission following Au L-shell photoionization

摘要

We studied the effect of Coster-Kronig transitions between L subshells on the anisotropy of x-rays emitted from Au ions following L-shell photoionization. The angular distribution of L x-rays was measured at incident photon energies selected above the threshold energy for each subshell with a crystal spectrometer. The experimental results show that the Coster-Kronig transitions have a small influence on the anisotropy of x-ray emission. Simple model estimations for the effect of the vacancies of the M or N shells on the anisotropy of x-ray emission following the Coster-Kronig transitions were made. The calculated results also indicate a small effect.