H2S ultrafast dissociation probed by energy-selected resonant Auger electron-ion coincidence measurements

We have studied the ultrafast dissociation of the H2S molecule upon S 2p3/2-->6a1 inner-shell excitation by combining high-resolution resonant Auger spectroscopy and energy-selected Auger electron-ion coincidence measurements. Auger final states have been correlated to the different fragmentation...

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Published inThe Journal of chemical physics Vol. 127; no. 11; p. 114315
Main Authors Le Guen, K, Miron, C, Céolin, D, Guillemin, R, Leclercq, N, Simon, M, Morin, P, Mocellin, A, Björneholm, O, Naves de Brito, A, Sorensen, S L
Format Journal Article
LanguageEnglish
Published United States 21.09.2007
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Summary:We have studied the ultrafast dissociation of the H2S molecule upon S 2p3/2-->6a1 inner-shell excitation by combining high-resolution resonant Auger spectroscopy and energy-selected Auger electron-ion coincidence measurements. Auger final states have been correlated to the different fragmentation pathways (S+, HS+, and H2S+ ions). As an original result, we evidence a three-step mechanism to describe the resonant production of S+: the Auger recombination in the HS* fragment is followed for the A 3Pi and c 1Pi states by the S++H fragmentation mechanism.
ISSN:0021-9606
1089-7690
DOI:10.1063/1.2776265