On the valence shell binding energy spectrum of carbonyl sulphide

J. P.D. Cook, M. G. White, C. E. Brion, W. Domcke, J. Schirmer, L. S. Cederbaum, W. von Niessen

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Abstract

The valence shell binding energy spectrum of carbonyl sulphide (10-45 eV) has been measured using both binary (e,2e) and dipole (e,2e) electron impact spectroscopy and calculated by the 2ph-TDA many body Green's function technique. The spectrum shows extensive structure above 20 eV, indicating a major breakdown of the quasi-particle picture for ionization of COS. The calculation is in good agreement with the present experimental and literature ESCA binding energy spectra. Binary (e,2e) spectra at two azimuthal angles support the theoretical prediction that this extensive final ion state structure arises primarily from ionization of the COS 6σ and 7σ inner valence electrons.

Original languageEnglish
Pages (from-to)261-270
Number of pages10
JournalJournal of Electron Spectroscopy and Related Phenomena
Volume22
Issue number3
DOIs
StatePublished - 1981
Externally publishedYes

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