Importance of dynamical effects in determining the Auger spectral shape: L23-M45M45 spectra of Fe, Co, and Cu

We estimate the relative contributions of the decay channels arising from various Coster-Kronig (CK) and initial-state shake processes to the satellite intensity accompanying the L2- and L3-M45M45 Auger spectra of Cu. While the intensity ratios between the L2- and L3-M45M45 spectral features in Fe and Co also exhibit pronounced effects of the Coster-Kronig L2-L3M45 transition, the CK process does not lead to the formation of distinct satellites in the L3-M45M45 spectral region, in contrast to the case of Cu. This fact establishes that the M45 hole generated by the CK transition primarily decays before the L3-hole Auger decay in the 3d transition elements up to Co.