Final State Interactions of Inner Core Absorption Excitation in Transition Metal Halides

Abstract

Absorption spectra resulting from the inner 3p-shell excitation of transition metal ions in halide compounds are measured in the photon energy range from 25 to 140 eV with synchrotron radiation from SOR-RING. The observed characteristic multiplet structures spreading over 10–20 eV are well explained by the localized excitation model for the 3p 5 3d m+1 excited states, providing the evaluation of the final state interactions. The asymmetry of the absorption bands of the transition metal compounds with more than half-filled 3d-shell is interpreted as due to the interference caused by the super Coster-Kronig transition, in contrast to the rather symmetric and broad spectral line shape in the compounds with less than half-filled 3d-shell.