The N4,5N6,7N6,7 and N4,5N6,7O4,5 Auger spectra of Au, Pt and Ir

Abstract

The relative intensities of N 4,5 N 6,7, N 4,5 N 6,7 O 4,5 and N 4,5 N 6,7 O 2,3 transitions in clean Au, Pt and Ir are measured, and the relative roles of super-Coster—Kronig and Coster—Kronig de-excitation of N 4,5 holes are discussed. Super-Coster—Kronig transitions account for more than half the de-excitation in Au, and become increasingly dominant as the number of O 4,5 electrons in the metal decreases. High-resolution measurements of the N 4,5 N 6,7 X transitions ( X= N 6,7, O 1, O 2,3, O 4,5 in Au, Pt and Ir have been presented. Although there are detailed discrepancies in relation to the theory of McGuire, the super-Coster—Kronig transitions are always more intense than the Coster—Kronig transitions, and the intensity of the N 4,5 N 6,7 O 4,5 transitions falls rapidly as the number of O 4,5 electrons decreases.