Issue 12, 2012
From the journal:

Physical Chemistry Chemical Physics

Two-body Coulomb explosion in methylacetylene in intense laser fields: double proton migration and proton/deuteron exchange

Tomoya Okino,a   Anri Watanabe,a   Huailiang Xuab  and  Kaoru Yamanouchi*a  

* Corresponding authors

a Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Japan
E-mail: kaoru@chem.s.u-tokyo.ac.jp
Fax: +81 3 5689 7347
Tel: +81 3 5841 4334

b State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, China

Abstract

Two-body decomposition processes of methylacetylene (CH3CCH) and its isotopomer methyl-d3-acetylene (CD3CCH) in intense laser fields (790 nm, 40 fs, 5.0 × 1013 W cm−2) are investigated by the coincidence momentum imaging (CMI). In methyl-d3-acetylene, 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 occurs prior to the two-body decomposition of a doubly charged parent molecule.

Graphical abstract: Two-body Coulomb explosion in methylacetylene in intense laser fields: double proton migration and proton/deuteron exchange

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Article information

DOI
https://doi.org/10.1039/C2CP23880B
Article type
Paper
Submitted
05 Dec 2011
Accepted
24 Jan 2012
First published
25 Jan 2012

Phys. Chem. Chem. Phys., 2012,14, 4230-4235

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Two-body Coulomb explosion in methylacetylene in intense laser fields: double proton migration and proton/deuteron exchange

T. Okino, A. Watanabe, H. Xu and K. Yamanouchi, Phys. Chem. Chem. Phys., 2012, 14, 4230 DOI: 10.1039/C2CP23880B

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