Satellite-Dominated Sulfur L_2,3 X-ray Emission of Alkaline Earth Metal Sulfides.

ABSTRACT: The sulfur L_2,3 X-ray emission spectra of the alkaline earth metal sulfides BeS, MgS, CaS, SrS, and BaS are investigated and compared with spectra calculations based on density functional theory. Very distinct spectral shapes are found for the different compounds. With decreasing electronegativity of the cation, that is, increasing ionic bonding character, the upper valence band width and its relative spectral intensity decrease. These general trends are qualitatively reproduced by the spectra calculations, which give quite an accurate description of the spectral shapes in the upper valence band region. On the low energy side of the sulfur 3s → 2p transition dominating the spectra, we find strong satellites caused by "semi-Auger" decays involving configuration interaction. These

SUBMITTER: Weinhardt L 

PROVIDER: S-EPMC9909793 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature