Visualizing recurrently migrating hydrogen in acetylene dication by intense ultrashort laser pulses

We demonstrate the visualization of ultrafast hydrogen migration in deuterated acetylene dication (C2D2{2+}) by employing the pump-probe Coulomb explosion imaging with sub-10-fs intense laser pulses (9 fs, 0.13 PW/cm{2}, 800 nm). It is shown, from the temporal evolution of the momenta of the fragmen...

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Veröffentlicht in:	Physical review letters 2007-12, Vol.99 (25), p.258302-258302, Article 258302
Hauptverfasser:	Hishikawa, Akiyoshi, Matsuda, Akitaka, Fushitani, Mizuho, Takahashi, Eiji J
Format:	Artikel
Sprache:	eng
Schlagworte:	ACETYLENE Acetylene - chemistry CARBON CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS DEUTERIUM DISSOCIATION EVOLUTION EXPLOSIONS HYDROGEN Hydrogen - chemistry Kinetics LASERS PULSES Spectrum Analysis - methods
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container_title	Physical review letters
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creator	Hishikawa, Akiyoshi Matsuda, Akitaka Fushitani, Mizuho Takahashi, Eiji J
description	We demonstrate the visualization of ultrafast hydrogen migration in deuterated acetylene dication (C2D2{2+}) by employing the pump-probe Coulomb explosion imaging with sub-10-fs intense laser pulses (9 fs, 0.13 PW/cm{2}, 800 nm). It is shown, from the temporal evolution of the momenta of the fragment ions produced by the three-body explosion, C2D2{3+}-->D{+} + C{+} + CD{+}, 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 (approximately 90 fs) and then migrates back to the original carbon site by 280 fs, in competition with the molecular dissociation.
doi_str_mv	10.1103/physrevlett.99.258302
format	Article
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subjects	ACETYLENE Acetylene - chemistry CARBON CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS DEUTERIUM DISSOCIATION EVOLUTION EXPLOSIONS HYDROGEN Hydrogen - chemistry Kinetics LASERS PULSES Spectrum Analysis - methods
title	Visualizing recurrently migrating hydrogen in acetylene dication by intense ultrashort laser pulses
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