LMM and LMN auger transitions of 4d metals: Comparison of experiment and theory

In recent years, there has been considerable theoretical and experimental i nterest in the study of Auger transitions, especially with respect to: hole -hole interactions, electron correlation effects and screening processes. A uger transitions involving only core levels are particularly interesting be cause in this case the quasi-atomic model of screening is strictly applicab le. In this limit, theoretical models are applicable to the calculation of both the energy and line shape. Comparisons with experimental results are a crucial test of atomic theories. Here we present the measured LMM and LMN Auger spectra of Ru, Rh, Pd, Ag, In, Sn and Sb, excited with the K alpha ra diation ((h) over bar omega = 4510.9 eV) of Ti. In all cases, we compare th e spectra with results of atomic calculations in the closed shell approxima tion, assuming the initial state in the jj coupling scheme and the final st ate in the intermediate coupling (IC) scheme. This comparison permits a stu dy of the applicability of these atomic theories. (C) 1999 Elsevier Science B.V. All rights reserved.