Population transfer to high angular momentum states in infrared-assisted XUV photoionization of helium

dc.bibliographicCitation.firstPage164003eng
dc.bibliographicCitation.issue16eng
dc.bibliographicCitation.volume52eng
dc.contributor.authorMayer, Nicola
dc.contributor.authorPeng, Peng
dc.contributor.authorVilleneuve, David M.
dc.contributor.authorPatchkovskii, Serguei
dc.contributor.authorIvanov, Misha
dc.contributor.authorKornilov, Oleg
dc.contributor.authorVrakking, Marc J.J.
dc.contributor.authorNiikura, Hiromichi
dc.date.accessioned2021-11-18T06:02:19Z
dc.date.available2021-11-18T06:02:19Z
dc.date.issued2020
dc.description.abstractAn extreme-ultraviolet (XUV) laser pulse consisting of harmonics of a fundamental near-infrared (NIR) laser frequency is combined with the NIR pulse to systematically study two-color photoionization of helium atoms. A time-resolved photoelectron spectroscopy experiment is carried out where energy- A nd angle-resolved photoelectron distributions are obtained as a function of the NIR intensity and wavelength. Time-dependent Schrödinger equation calculations are performed for the conditions corresponding to the experiment and used to extract residual populations of Rydberg states resulting from excitation by the XUV + NIR pulse pair. The residual populations are studied as a function of the NIR intensity (3.5 × 1010-8 × 1012 W cm-2) and wavelength (760-820 nm). The evolution of the photoelectron distribution and the residual populations are interpreted using an effective restricted basis model, which includes the minimum set of states relevant to the features observed in the experiments. As a result, a comprehensive and intuitive picture of the laser-induced dynamics in helium atoms exposed to a two-color XUV-NIR light field is obtained. © 2020 The Author(s). Published by IOP Publishing Ltd.eng
dc.description.versionpublishedVersioneng
dc.identifier.urihttps://oa.tib.eu/renate/handle/123456789/7334
dc.identifier.urihttps://doi.org/10.34657/6381
dc.language.isoengeng
dc.publisherBristol : IOP Publ.eng
dc.relation.doihttps://doi.org/10.1088/1361-6455/ab9495
dc.relation.essn1361-6455
dc.relation.ispartofseriesJournal of physics : B, Atomic, Molecular and Optical Physics 53 (2020), Nr. 16eng
dc.rights.licenseCC BY 4.0 Unportedeng
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/eng
dc.subjectnear-infrared (NIR) laser frequencyeng
dc.subjectSchrödinger equationeng
dc.subjectRydberg stateeng
dc.subject.ddc530eng
dc.titlePopulation transfer to high angular momentum states in infrared-assisted XUV photoionization of heliumeng
dc.typearticleeng
dc.typeTexteng
dcterms.bibliographicCitation.journalTitleJournal of physics : B, Atomic, Molecular and Optical Physicseng
tib.accessRightsopenAccesseng
wgl.contributorMBIeng
wgl.subjectPhysikeng
wgl.typeZeitschriftenartikeleng
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