Ab-initio validation of a simple heuristic expression for the sequential-double-ionization contribution to the double ionization of helium by ultrashort XUV pulses

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dc.contributor.author Liu, A.
dc.contributor.author Thumm, Uwe P. E.
dc.date.accessioned 2016-04-06T15:11:26Z
dc.date.available 2016-04-06T15:11:26Z
dc.identifier.uri http://hdl.handle.net/2097/32408
dc.description Citation: Liu, A., & Thumm, U. (2015). Ab-initio validation of a simple heuristic expression for the sequential-double-ionization contribution to the double ionization of helium by ultrashort XUV pulses. 635(9). doi:10.1088/1742-6596/635/9/092039
dc.description We study two-photon double ionization of helium by short XUV pulses by numerically solving the time-dependent Schrodinger equation in full dimensionality within a finite-element discrete-variable-representation scheme. Based on the emission asymmetries in joint photoelectron angular distributions, we identify sequential and non-sequential contributions to two-photon double ionization for ultrashort pulses whose spectrum overlaps the sequential (? > 54.4 eV) and non-sequential (39.5 eV < ? < 54.4 eV) double-ionization regimes. © Published under licence by IOP Publishing Ltd.
dc.relation.uri https://doi.org/10.1088/1742-6596/635/9/092039
dc.rights Attribution 3.0 Unported (CC BY 3.0)
dc.rights.uri http://creativecommons.org/licenses/by/3.0/
dc.subject Atoms
dc.subject Helium
dc.subject Ionization
dc.subject Laser Pulses
dc.subject Nonlinear Equations
dc.subject Photoelectron Spectroscopy
dc.title Ab-initio validation of a simple heuristic expression for the sequential-double-ionization contribution to the double ionization of helium by ultrashort XUV pulses
dc.type Article
dc.date.published 2015
dc.citation.doi 10.1088/1742-6596/635/9/092039
dc.citation.issn 1742-6588
dc.citation.issue 9
dc.citation.volume 635
dc.contributor.authoreid thumm


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