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Article Dans Une Revue Journal of Molecular Spectroscopy Année : 2021

High resolution threshold photoelectron spectrum and autoionization processes of S2 up to 15.0 eV

Résumé

VUV photoionization dynamics of the S2 molecule were re-investigated from threshold up to 15.0 eV, using synchrotron radiation coupled with double imaging photoelectron/photoion coincidence featuring high resolution capabilities. We measured the first threshold photoelectron spectrum of S2 achieving higher resolution than previous literature to derive accurate spectroscopic constants for a few electronic states of the cation including the X 2 PW, g ground state and the a 4 Pu, b 4 Sg-, and B 2 Sgstates. We also recorded the total ion yield for S2 up to a photon energy of 15.0 eV which, combined with the threshold photoelectron spectrum, led to the assignment of various autoionizing Rydberg series.
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Dates et versions

hal-03365531 , version 1 (05-10-2021)

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Helgi Rafn Hrodmarsson, Gustavo A Garcia, Laurent Nahon, Jean-Christophe Loison, Bérenger Gans. High resolution threshold photoelectron spectrum and autoionization processes of S2 up to 15.0 eV. Journal of Molecular Spectroscopy, 2021, pp.111533. ⟨10.1016/j.jms.2021.111533⟩. ⟨hal-03365531⟩
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