Relativistic theory of the double photoionization of heliumlike atoms

• Verfasst von: Yerokhin, Vladimir [VerfasserIn]
• Verfasst von: Surzhykov, Andrey [VerfasserIn]
• Titel: Relativistic theory of the double photoionization of heliumlike atoms
• Verf.angabe: Vladimir A. Yerokhin and Andrey Surzhykov
• E-Jahr: 2011
• Jahr: 6 September 2011
• Umfang: 9 S.
• Fussnoten: Gesehen am 12.12.2022
• Titel Quelle: Enthalten in: Physical review / A
• Ort Quelle: College Park, Md., 1970
• Jahr Quelle: 2011
• Band/Heft Quelle: 84(2011), 3, Artikel-ID 032703, Seite 1-9
• ISSN Quelle: 1094-1622
• DOI: doi:10.1103/PhysRevA.84.032703
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 182678019X

Abstract

A fully relativistic calculation of the double photoionization of heliumlike atoms is presented. The approach is based on the partial-wave representation of the Dirac continuum states and accounts for the retardation in the electron-electron interaction as well as the higher-order multipoles of the absorbed photon. The electron-electron interaction is taken into account to the leading order of the perturbation theory. The relativistic effects are shown to become prominent already for the medium-Z ions, changing the shape and the asymptotic behavior of the photon energy dependence of the ratio of the double-to-single photoionization cross section.