L-Subshell Fluorescence Yields for Silver and Tellurium

Abstract
We have employed newly developed graphite mosaic crystals to observe the L x-ray spectrum from the decays of Cd109 and I125. From the measured values of the subshell fluorescence yields, we conclude that either one or both of the Coster-Kronig transitions L1L3M4 and L1L3M5 is forbidden in both the silver and tellurium daughters.