An experimental and theoretical study of the valence shell photoelectron spectrum of carbon disulphide

Baltzer, P.; Wannberg, B.; Lundqvist, Maria; Karlsson, Leif; Holland, D.M.P.; MacDonald, Michael A.; Hayes, M. A.; Tomasello, P.; Niessen, W. von

doi:10.1016/0301-0104(95)00303-7

Cited by 37 publications

(82 citation statements)

References 59 publications

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“…The spacing of the first four features is very similar to the spacing of bands in the valence photoelectron spectrum. 25 Following similar observations on triple ionization of other molecules 26,27 we attribute the differences in contrast between Figs. 2͑b͒ and 2͑c͒ partly to instrumental resolution effects, but mainly to the occurrence of cascade Auger pathways via superexcited CS 2 2+ states which autoionize with predominant emission of low energy electrons.…”

Section: B Double Auger Spectra Via S 2psupporting

confidence: 74%

“…The bands in this core-valence spectrum can be assigned very clearly by comparison with the regular valence photoelectron spectrum 25 with which it is almost congruent ͑apart from peak doubling by the 2 P spin-orbit splitting͒, as will be discussed in a separate work. 29 Briefly, it seems that either singlet-triplet splittings in the core-valence states are very small, or only the singlets are appreciably populated.…”

Section: Triple Ionization Via Core-valence Doubly Ionized Statesmentioning

confidence: 69%

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Spectra of the triply charged ion CS23+ and selectivity in molecular Auger effects

Eland

Rigby

Andersson

et al. 2010

The Journal of Chemical Physics

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Spectra of triply charged carbon disulphide have been obtained by measuring, in coincidence, all three electrons ejected in its formation by photoionization. Measurements of the CS 2 3+ ion in coincidence with the three electrons identify the energy range where stable trications are formed. A sharp peak in this energy range is identified as the 2 ⌸ ground state at 53.1Ϯ 0.1 eV, which is the lowest electronic state according to ab initio molecular orbital calculations. Triple ionization by the double Auger effect is provisionally divided, on the basis of the pattern of energy sharing between the two Auger electrons into contributions from direct and cascade Auger processes. The spectra from the direct double Auger effect via S 2p, S 2s, and C 1s hole states contain several resolved features and show selectivity based on the initial charge localization and on the identity of the initial state. Triple ionization spectra from single Auger decay of S 2p-based core-valence states CS 2 2+show retention of the valence holes in this Auger process. Related ion-electron coincidence measurements give the triple ionization yields and the breakdown patterns in triple photoionization at selected photon energies from 90 eV to above the inner shell edges.

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Section: B Double Auger Spectra Via S 2psupporting

confidence: 74%

Section: Triple Ionization Via Core-valence Doubly Ionized Statesmentioning

confidence: 69%

Spectra of the triply charged ion CS23+ and selectivity in molecular Auger effects

Eland

Rigby

Andersson

et al. 2010

The Journal of Chemical Physics

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“…This energy difference is the same as the splitting observed between the X 2 ⌸ g and A 2 ⌸ u states of the valence photoelectron spectrum, 10,11 which supports an interpretation in terms of a ͑S 2p 3/2 ͒ −1 ͑2 u ͒ −1 final dicationic state. The calculated energies of the next lowest ͑S 2p 3/2 ͒ −1 −1 states are in good agreement with this assignment.…”

Section: A S 2p-valence Dipessupporting

confidence: 74%

“…For assignments of spectra using qualitative arguments, rather different methods apply to the states derived from these three types of configurations. In the present case, we have obtained spectra associated with ͑io͒ −1 ͑vo͒ −1 final state configurations and the analysis will be made using the generally accepted ground state valence electron configuration of CS 2 , which is 10,11 …”

Section: Introductionmentioning

confidence: 99%

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Core-valence double photoionization of the CS2 molecule

Andersson

Niskanen

Hedin

et al. 2010

The Journal of Chemical Physics

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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 h = 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 ͑2 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 1s͒ −1 ͑2 g ͒ −1 double vacancy.

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Understanding Electron Correlation: Recent Progress in Molecular Synchrotron Photoelectron Spectroscopy

Bawagan

Davidson

1999

Advances in Chemical Physics

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An experimental and theoretical study of the valence shell photoelectron spectrum of carbon disulphide

Cited by 37 publications

References 59 publications

Spectra of the triply charged ion CS23+ and selectivity in molecular Auger effects

Spectra of the triply charged ion CS23+ and selectivity in molecular Auger effects

Core-valence double photoionization of the CS2 molecule

Understanding Electron Correlation: Recent Progress in Molecular Synchrotron Photoelectron Spectroscopy

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