Double Proton Migration and Proton/Deuteron Exchange in Methylacetylene in Intense Laser Fields

  • T. Okino
  • A. Watanabe
  • H. Xu
  • K. Yamanouchi
Conference paper
Part of the Springer Proceedings in Physics book series (SPPHY, volume 125)


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.


Event Number Migration Pathway Dissociation Pathway Hydrogen Migration Intense Laser Field 
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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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    H.L. Xu, T. Okino, K. Yamanouchi, J. Chem. Phys. 131, 151102 (2009)Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  1. 1.Department of Chemistry, School of ScienceThe University of TokyoTokyoJapan

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