Time-resolved Coulomb-explosion imaging of nuclear wave-packet dynamics induced in diatomic molecules by intense few-cycle laser pulses

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dc.contributor.author Bocharova, I. A.
dc.contributor.author Alnaser, A. S.
dc.contributor.author Thumm, Uwe P. E.
dc.contributor.author Niederhausen, T.
dc.contributor.author Ray, D.
dc.contributor.author Cocke, Charles L.
dc.contributor.author Litvinyuk, I. V.
dc.date.accessioned 2013-05-30T18:58:36Z
dc.date.available 2013-05-30T18:58:36Z
dc.date.issued 2011-01-31
dc.identifier.uri http://hdl.handle.net/2097/15867
dc.description.abstract We studied the nuclear dynamics in diatomic molecules (N[subscript 2], O[subscript 2], and CO) following their interaction with intense near-IR few-cycle laser pulses. Using Coulomb-explosion imaging in combination with the pump-probe approach, we mapped dissociation pathways of those molecules and their molecular ions. We identified all symmetric and asymmetric breakup channels for molecular ions up to N[subscript 2][superscript 5+], O[subscript 2][superscript 4+], and CO[superscript 4+]. For each of those channels we measured the kinetic energy release (KER) spectra as a function of delay between the pump and probe pulses. For both N[subscript 2] and O[subscript 2] the asymmetric (3,1) channel is only observed for short (<20 fs) delays and completely disappears after that. We interpret this observation as a signature of electron localization taking place in dissociating molecular tri-cations when their internuclear separation reaches about 2.5 times the equilibrium bond length. This is a direct confirmation that electron localization plays an essential role in the universal mechanism of enhanced ionization in homonuclear diatomic molecules. Using classical and quantum mechanical simulations of the time-dependent KER spectra, we identify the pathways and intermediate states involved in the laser-induced dissociation of those molecules. en_US
dc.language.iso en_US en_US
dc.relation.uri https://doi.org/10.1103/PhysRevA.83.013417 en_US
dc.rights This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s). en_US
dc.rights.uri http://rightsstatements.org/vocab/InC/1.0/
dc.subject Nuclear dynamics en_US
dc.subject Coulomb-explosion imaging en_US
dc.subject Kinetic-energy release en_US
dc.subject Electron localization en_US
dc.title Time-resolved Coulomb-explosion imaging of nuclear wave-packet dynamics induced in diatomic molecules by intense few-cycle laser pulses en_US
dc.type Article (publisher version) en_US
dc.date.published 2011 en_US
dc.citation.doi 10.1103/PhysRevA.83.013417 en_US
dc.citation.epage 013417-17 en_US
dc.citation.issue 1 en_US
dc.citation.jtitle Physical Review A en_US
dc.citation.spage 013417-1 en_US
dc.citation.volume 83 en_US
dc.contributor.authoreid thumm en_US
dc.contributor.authoreid cocke en_US


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This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s). Except where otherwise noted, the use of this item is bound by the following: This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).

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