Double Proton Migration and Proton/Deuteron Exchange in Methylacetylene in Intense Laser Fields
Two-body decomposition processes of methyl-d 3-acetylene in intense laser fields are investigated by the coincidence momentum imaging (CMI). A total of six decomposition pathways in which one of the C–C bonds is broken and a total of six pathways in which an atomic hydrogen ion (H + or D+) or a molecular hydrogen ion (H2 +, HD +, D3 + , or HD2 +) is ejected are identified. It is revealed from the analysis of the CMI data that the migration of two deuterons as well as the exchange between a proton and a deuteron occur prior to the two-body decomposition of doubly charged parent molecules.
KeywordsEvent Number Migration Pathway Dissociation Pathway Hydrogen Migration Intense Laser Field
The present research was supported by the following two grants from the Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan; the Grant-in-Aid for Specially Promoted Research on Ultrafast Hydrogen Migration (♯ 19002006), and the Grant-in-Aid for Global COE Program for Chemistry Innovation.
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