Two-proton migration in 1,3-butadiene in intense laser fields

Huailiang Xu; Tomoya Okino; Katsunori Nakai; Kaoru Yamanouchi; Stefan Roither; Xinhua Xie; Daniil Kartashov; Li Zhang; Andrius Baltuska; Markus Kitzler

doi:10.1039/C0CP00628A

Two-proton migration in 1,3-butadiene in intense laser fields

Huailiang Xu,^ab Tomoya Okino,^a Katsunori Nakai,^a Kaoru Yamanouchi,*^a Stefan Roither,^c Xinhua Xie,^c Daniil Kartashov,^c Li Zhang,^c Andrius Baltuska^c and Markus Kitzler^c

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^a Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, 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 130012, China

^c Photonics Institute, Vienna University of Technology, Gusshausstrasse 27, A-1040 Vienna, Austria

Abstract

Ultrafast proton migration in 1,3-butadiene in an intense laser field (40 fs, 4.5 × 10¹⁴ W cm⁻²) is investigated by using Coulomb explosion coincidence momentum imaging. The spatial distribution maps of a migrating proton reconstructed for the two three-body Coulomb explosion pathways, C₄H₆³⁺ → H⁺ + CH₃⁺ + C₃H₂⁺ and C₄H₆³⁺ → H⁺ + C₂H⁺ + C₂H₄⁺, reveal that two protons migrate within a 1,3-butadiene molecule, prior to the three body decomposition.

Physical Chemistry Chemical Physics

Two-proton migration in 1,3-butadiene in intense laser fields

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Two-proton migration in 1,3-butadiene in intense laser fields

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