Dissociation dynamics of diatomic molecules in intense laser fields: a scheme for the selection of relevant adiabatic potential curves

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dc.contributor.author Magrakvelidze, Maia
dc.contributor.author Aikens, Christine M.
dc.contributor.author Thumm, Uwe P. E.
dc.date.accessioned 2013-04-11T14:07:12Z
dc.date.available 2013-04-11T14:07:12Z
dc.date.issued 2013-04-11
dc.identifier.uri http://hdl.handle.net/2097/15493
dc.description.abstract We investigated the nuclear dynamics of diatomic molecular ions in intense laser fields by analyzing their fragment kinetic-energy release (KER) spectra as a function of the pump-probe delay τ . Within the Born-Oppenheimer (BO) approximation, we calculated ab initio adiabatic potential-energy curves and their electric dipole couplings, using the quantum chemistry code GAMESS. By comparing simulated KER spectra as a function of either τ or the vibrational quantum-beat frequency for the nuclear dynamics on both individual and dipole-coupled BO potential curves with measured spectra, we developed a scheme for identifying electronic states that are relevant for the dissociation dynamics. We applied this scheme to investigate the nuclear dynamics in O[subscript 2][superscript +] ions that are produced by ionization of neutral O[subscript 2] molecules in an ultrashort infrared (IR) pump pulse and dissociate due to the dipole coupling of molecular potential curves in a delayed IR probe laser field. en_US
dc.language.iso en_US en_US
dc.relation.uri http://link.aps.org/doi/10.1103/PhysRevA.86.023402 en_US
dc.rights ©2012 American Physical Society en_US
dc.subject Kinetic-energy release en_US
dc.subject Diatomic molecular ions en_US
dc.subject Intense laser fields en_US
dc.title Dissociation dynamics of diatomic molecules in intense laser fields: a scheme for the selection of relevant adiabatic potential curves en_US
dc.type Article (publisher version) en_US
dc.date.published 2012 en_US
dc.citation.doi doi:10.1103/PhysRevA.86.023402 en_US
dc.citation.epage 023402-9 en_US
dc.citation.jtitle Physical Review A en_US
dc.citation.spage 023402-1 en_US
dc.citation.volume 86 en_US
dc.contributor.authoreid thumm en_US


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