K- and LII, III-Shell excitations in CS2 and COS by 2.5 keV electron impact

Abstract

Abstract Energy loss spectra of 2.5 keV electrons, scattered by CS2 and COS through small angles, have been studied in the regions of the respective oxygen K, carbon K and sulfur LII, III(2p) edges. The carbon and oxygen K-shell spectra are dominated by the first discrete transition similar to the K-shell spectra of the “isoelectronic” molecules CO2 and N2O. However, the carbon K-shell spectra of CS2 and COS have features which may indicate the possible existence of an effective potential barrier in these molecules.