L3M4,5M4,5 Auger transitions and valence hole screening of the 4d metals

Abstract

High kinetic energy (2000–3000 eV) L3M4,5M4,5 Auger transitions (excited by Bremsstrahlung) are reported for the 4d series. The valence electron contribution to the measured Auger parameters was extracted from the data by exploiting systematics predicted theoretically. The systematic dependence on atomic number clearly manifests the effect of the nature of the screening charge and agrees remarkably well with independent theoretical calculations of metallic renormalization. Corresponding valence contributions for the 3d and 5d metals exhibit similar screening systematics.