Abstract
Ultrafast hydrogen migration in deuterated acetylene dication (C\({}_{2}{\mathrm{D}}_{2}^{2+}\)) is studied by time-resolved four-body Coulomb explosion imaging, C2D\({}_{2}^{4+}\, \rightarrow \,\,{\mathrm{D}}^{+} +{ \mathrm{C}}^{+} +{ \mathrm{C}}^{+} +{ \mathrm{D}}^{+}\), using a pair of few-cycle intense laser pulses (9 fs, 1. 3 ×1014 W/cm2). Momentum correlation of the D + ions produced by the full fragmentation process shows that (1) motions of the two deuterium atoms are strongly correlated during the isomerization and (2) the molecular structure deforms to non-planar geometries.
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Acknowledgements
This work is supported by the PRESTO fund for “Evolution of Light Generation and Manipulation” from Japan Science and Technology Agency and by the Grant in Aid (#15685001) from MEXT of Japan.
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Matsuda, A., Fushitani, M., Takahashi, E.J., Hishikawa, A. (2012). Visualizing Correlated Dynamics of Hydrogen Atoms in Acetylene Dication by Time-Resolved Four-Body Coulomb Explosion Imaging. In: Yamanouchi, K., Katsumi, M. (eds) Multiphoton Processes and Attosecond Physics. Springer Proceedings in Physics, vol 125. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-28948-4_53
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