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Simulation of angular-resolved RABBITT measurements in noble-gas atoms

Bray, Alexander; Naseem, Faiza; Kheifets, Anatoli

Description

We simulate angular-resolved RABBITT (reconstruction of attosecond beating by interference of two-photon transitions) measurements on valence shells of noble-gas atoms (Ne, Ar, Kr, and Xe). Our nonperturbative numerical simulation is based on solution of the time-dependent Schrödinger equation (TDSE) for a target atom driven by an ionizing XUV and dressing IR fields. From these simulations we extract the angular-dependent magnitude and phase of the RABBITT oscillations and deduce the...[Show more]

dc.contributor.authorBray, Alexander
dc.contributor.authorNaseem, Faiza
dc.contributor.authorKheifets, Anatoli
dc.date.accessioned2020-05-18T01:22:56Z
dc.date.available2020-05-18T01:22:56Z
dc.identifier.issn2469-9926
dc.identifier.urihttp://hdl.handle.net/1885/204391
dc.description.abstractWe simulate angular-resolved RABBITT (reconstruction of attosecond beating by interference of two-photon transitions) measurements on valence shells of noble-gas atoms (Ne, Ar, Kr, and Xe). Our nonperturbative numerical simulation is based on solution of the time-dependent Schrödinger equation (TDSE) for a target atom driven by an ionizing XUV and dressing IR fields. From these simulations we extract the angular-dependent magnitude and phase of the RABBITT oscillations and deduce the corresponding angular anisotropy β parameter and Wigner time delay τ W for the single XUV photon absorption that initiates the RABBITT process. Said β and τ W parameters are compared with calculations in the random-phase approximation with exchange (RPAE), which includes intershell correlation. This comparison is used to test various effective potentials employed in the one-electron TDSE. In lighter atoms (Ne and Ar), several effective potentials are found to provide accurate simulations of RABBITT measurements for a wide range of photon energies up to 100 eV above the valence-shell threshold. In heavier atoms (Kr and Xe), the onset of strong correlation with the d shell restricts the validity of the single active electron approximation to several tens of eV above the valence-shell threshold.
dc.format.mimetypeapplication/pdf
dc.language.isoen_AU
dc.publisherAmerican Physical Society
dc.rights© 2018 American Physical Society
dc.sourcePhysical Review A
dc.titleSimulation of angular-resolved RABBITT measurements in noble-gas atoms
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume97
dc.date.issued2018
local.identifier.absfor020201 - Atomic and Molecular Physics
local.identifier.ariespublicationa383154xPUB10169
local.publisher.urlhttps://www.aps.org/
local.type.statusPublished Version
local.contributor.affiliationBray, Alexander, College of Science, ANU
local.contributor.affiliationNaseem, Faiza, College of Science, ANU
local.contributor.affiliationKheifets, Anatoli, College of Science, ANU
local.bibliographicCitation.issue6
local.bibliographicCitation.startpage1
local.bibliographicCitation.lastpage12
local.identifier.doi10.1103/PhysRevA.97.063404
local.identifier.absseo970102 - Expanding Knowledge in the Physical Sciences
dc.date.updated2019-12-19T05:43:48Z
local.identifier.scopusID2-s2.0-85048568116
dcterms.accessRightsOpen Access
dc.provenancehttp://sherpa.ac.uk/romeo/issn/2469-9926/..."author can archive publisher's version/PDF" from Sherpa/Romeo (as at 18/05/2020)
CollectionsANU Research Publications

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