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

作者：Le Guen K^*; Miron C; Ceolin D; Guillemin R; Leclercq N; Simon M; Morin P; Mocellin A; Bjorneholm O; de Brito A Naves; Sorensen S L

来源：Journal of Chemical Physics, 2007, 127(11): 114315.

DOI：10.1063/1.2776265

We have studied the ultrafast dissociation of the H2S molecule upon S 2p(3/2)-> 6a(1) 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)Pi and c (1)Pi states by the S++H fragmentation mechanism.

• 出版日期2007-9-21
• 单位中国地震局