Visualizing Recurrently Migrating Hydrogen in Acetylene Dication by Intense Ultrashort Laser Pulses

Journal Article · Fri Dec 21 04:00:00 EST 2007 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.99.258302· OSTI ID:21024622

Hishikawa, Akiyoshi ^[1]; Matsuda, Akitaka ^[1]; Fushitani, Mizuho; Takahashi, Eiji J ^[1]

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1. Institute for Molecular Science, National Institutes of Natural Sciences, Myodaiji, Okazaki, Aichi 444-8585 (Japan)

We demonstrate the visualization of ultrafast hydrogen migration in deuterated acetylene dication (C{sub 2}D{sub 2}{sup 2+}) by employing the pump-probe Coulomb explosion imaging with sub-10-fs intense laser pulses (9 fs, 0.13 PW/cm{sup 2}, 800 nm). It is shown, from the temporal evolution of the momenta of the fragment ions produced by the three-body explosion, C{sub 2}D{sub 2}{sup 3+}{yields}D{sup +}+C{sup +}+CD{sup +}, that the migration proceeds in a recurrent manner: The deuterium atom first shifts from one carbon site to the other in a short time scale ({approx}90 fs) and then migrates back to the original carbon site by 280 fs, in competition with the molecular dissociation.

• OSTI ID: 21024622
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 25 Vol. 99; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ACETYLENE
CARBON
DEUTERIUM
DISSOCIATION
EVOLUTION
EXPLOSIONS
HYDROGEN
LASERS
PULSES