LMM Auger spectra of Cu, Zn, Ga, and Ge, II. Relationship with the L23 photoelectron spectra via the L2L3M45 Coster-Kronig process

Abstract

In this paper we present conclusive experimental evidence that the Auger satellite structure on the low-kinetic-energy side of the $L_3{M}_{45}{M}_{45}$ Auger spectra in Cu and Zn is a direct result of the $L_2{L}_3{M}_{45}$ Coster-Kronig transition preceding the Auger transition. The position of the satellite structure is compared with numerical calculations of the final state for the ionized atoms. The same Coster-Kronig process is shown to be responsible for the anomalous intensity ratio of the $L_2{M}_{45}{M}_{45}$ to $L_3{M}_{45}{M}_{45}$ Auger spectra. From this intensity ratio the Auger part of the $L_{23}$ photoelectron linewidths can be determined and is shown to be in reasonable agreement with theoretical values.