title: Core-valence double photoionization of the CS(2) molecule.
abstract: Double photoionization spectra of the CS(2) molecule have been recorded using the TOF-PEPECO technique in combination with synchrotron radiation at the photon energies hν=220, 230, 240, 243, and 362.7 eV. The spectra were recorded in the S 2p and C 1s inner-shell ionization regions and reflect dicationic states formed out of one inner-shell vacancy and one vacancy in the valence region. MCSCF calculations were performed to model the energies of the dicationic states. The spectra associated with a S 2p vacancy are well structured and have been interpreted in some detail by comparison to conventional S 2p and valence photoelectron spectra. The lowest inner-shell-valence dicationic state is observed at the vertical double ionization energy 188.45 eV and is associated with a (2p(3/2))(-1)(2π(g))(-1) double vacancy. The spectrum connected to the C 1s vacancy shows a distinct line at 310.8 eV, accompanied by additional broad features at higher double ionization energies. This line is associated with a (C 1s)(-1)(2π(g))(-1) double vacancy.
authors.affiliation: Department of Physics and Astronomy, Uppsala University, Box 516, SE-751 20 Uppsala, Sweden.
authors.forename: E
authors.initials: E
authors.lastname: Andersson
authors.forename: J
authors.initials: J
authors.lastname: Niskanen
authors.forename: L
authors.initials: L
authors.lastname: Hedin
authors.forename: J H D
authors.initials: JH
authors.lastname: Eland
authors.forename: P
authors.initials: P
authors.lastname: Linusson
authors.forename: L
authors.initials: L
authors.lastname: Karlsson
authors.forename: J-E
authors.initials: JE
authors.lastname: Rubensson
authors.forename: V
authors.initials: V
authors.lastname: Carravetta
authors.forename: H
authors.initials: H
authors.lastname: Agren
authors.forename: R
authors.initials: R
authors.lastname: Feifel
mesh_terms: D002246:Carbon Disulfide / Q000737:chemistry*; D007477:Ions / Q000737:chemistry; D017785:Photons; D013057:Spectrum Analysis
chemical_list: D007477:Ions; D002246:Carbon Disulfide