H2S ultrafast dissociation probed by energy-selected resonant Auger electron–ion coincidence measurements
- Le Guen, K.
- Miron, C.
- Céolin, D.
- Guillemin, R.
- Leclercq, N.
- Simon, M.
- Morin, Pascal
- Mocellin, A.
- Björneholm, O.
- De Brito, A.N.
- Sorensen, S.L.
DOIAbstract
International audienceWe have studied the ultrafast dissociation of the H2S molecule upon S 2p3/26a1 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 3 and c 1 states by the S++H fragmentation mechanism
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