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Separating Dipole and Quadrupole Contributions to Single-Photon Double Ionization

Grundmann, S; Trinter, F; Bray, Alexander; Eckart, Sebastian; Rist, Jonas; Kastirke, G; Metz, Daniel; Klumpp, S; Viefhaus, J; Schmidt, Lothar Ph H; Williams, J B; Kheifets, Anatoli

Description

We report on a kinematically complete measurement of double ionization of helium by a single 1100 eV circularly polarized photon. By exploiting dipole selection rules in the two-electron continuum state, we observed the angular emission pattern of electrons originating from a pure quadrupole transition. Our fully differential experimental data and companion ab initio nonperturbative theory show the separation of dipole and quadrupole contributions to photo-double-ionization and provide new...[Show more]

dc.contributor.authorGrundmann, S
dc.contributor.authorTrinter, F
dc.contributor.authorBray, Alexander
dc.contributor.authorEckart, Sebastian
dc.contributor.authorRist, Jonas
dc.contributor.authorKastirke, G
dc.contributor.authorMetz, Daniel
dc.contributor.authorKlumpp, S
dc.contributor.authorViefhaus, J
dc.contributor.authorSchmidt, Lothar Ph H
dc.contributor.authorWilliams, J B
dc.contributor.authorKheifets, Anatoli
dc.date.accessioned2020-06-15T02:22:17Z
dc.date.available2020-06-15T02:22:17Z
dc.identifier.issn0031-9007
dc.identifier.urihttp://hdl.handle.net/1885/205048
dc.description.abstractWe report on a kinematically complete measurement of double ionization of helium by a single 1100 eV circularly polarized photon. By exploiting dipole selection rules in the two-electron continuum state, we observed the angular emission pattern of electrons originating from a pure quadrupole transition. Our fully differential experimental data and companion ab initio nonperturbative theory show the separation of dipole and quadrupole contributions to photo-double-ionization and provide new insight into the nature of the quasifree mechanism.
dc.description.sponsorshipA. K. acknowledges support by the Wilhelm and Else Heraeus Foundation. S. K. acknowledges the funding of the EUCALL project within the European Unions Horizon 2020 Research and Innovation Programme under the Grant Agreement No. 654220. This work was supported by BMBF and DFG. We are grateful to the staff of PETRA III for excellent support during the beam time.
dc.format.extent5 pages
dc.format.mimetypeapplication/pdf
dc.language.isoen_AU
dc.publisherAmerican Physical Society
dc.rights© 2018 American Physical Society
dc.sourcePhysical Review Letters
dc.subjectsingle-and few-photon ionization and excitation, atomic, molecular and optical
dc.titleSeparating Dipole and Quadrupole Contributions to Single-Photon Double Ionization
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume121
dc.date.issued2018-10-23
local.identifier.absfor020201 - Atomic and Molecular Physics
local.identifier.ariespublicationu4485658xPUB1391
local.publisher.urlhttps://www.aps.org/
local.type.statusPublished Version
local.contributor.affiliationGrundmann, S, Goethe-Universität
local.contributor.affiliationTrinter, F, Goethe University
local.contributor.affiliationBray, Alexander, College of Science, The Australian National University
local.contributor.affiliationEckart, Sebastian, Goethe University
local.contributor.affiliationRist, Jonas, Goethe University
local.contributor.affiliationKastirke, G, Goethe-Universität
local.contributor.affiliationMetz, Daniel, Goethe Universität
local.contributor.affiliationKlumpp, S, Deutsches Elektronen-Synchrotron
local.contributor.affiliationViefhaus, J, Helmholtz-Zentrum Berlin
local.contributor.affiliationSchmidt, Lothar Ph H, Goethe University
local.contributor.affiliationWilliams, J B, University of Nevada
local.contributor.affiliationKheifets, Anatoli, College of Science, The Australian National University
local.identifier.essn1079-7114
local.bibliographicCitation.startpage173003
local.identifier.doi10.1103/PhysRevLett.121.173003
local.identifier.absseo970102 - Expanding Knowledge in the Physical Sciences
dc.date.updated2019-12-22T07:32:11Z
local.identifier.scopusID2-s2.0-85055697042
dcterms.accessRightsOpen Access
dc.provenancehttp://sherpa.ac.uk/romeo/issn/0031-9007/ Author can archive publisher's version/PDF. On author's personal website, employer's website or institutional repository. Publisher's version/PDF may be used (Sherpa/Romeo as of 15/6/2020)
CollectionsANU Research Publications

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