Coster-Kronig transition probabilityf23in gold atoms

Abstract

We have investigated the Coster-Kronig transition probability ${f}_{23}$ in gold atoms (nuclear charge $Z=79$) using the $L$ x-ray versus $K$ x-ray coincidence method. K vacancies were created using synchrotron radiation and the cascade decays were measured using germanium x-ray detectors. We find ${f}_{23}=0.112\ifmmode\pm\else\textpm\fi{}0.004$ which is somewhat lower than the recent coincidence measurement of Santra et al. which yielded ${f}_{23}=0.119\ifmmode\pm\else\textpm\fi{}0.003$. Our result is smaller than the values calculated by McGuire $({f}_{23}=0.132)$ and Puri et al. $({f}_{23}=0.129)$ but agrees with our own single-configuration Pauli-Fock calculation, which gives ${f}_{23}=0.114$, as well as the global set of prior experimental data.