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Single-photon double K-shell ionization of low-Z atoms

Hoszowska, J.; Kheifets, Anatoli; Dousse, Jean-Claude; Bray, Igor; Cao, W.; Fennane, K.; Kayser, Y.; Kavcic, M.; Szlachetko, J.; Szlachetko, M.

Description

The photon energy dependence of the double K-shell ionization of light atoms is reported. Experimental double-to-single photoionization cross section ratios for Mg, Al, Si and Ca were obtained from measurements of high-resolution x-ray emission spectra. The double photoionization (DPI) cross-sections for K-shell hollow atom production are compared to convergent close-coupling calculations (CCC) for neutral atoms and He-like ions. The relative importance of the initial-state and final-state...[Show more]

dc.contributor.authorHoszowska, J.
dc.contributor.authorKheifets, Anatoli
dc.contributor.authorDousse, Jean-Claude
dc.contributor.authorBray, Igor
dc.contributor.authorCao, W.
dc.contributor.authorFennane, K.
dc.contributor.authorKayser, Y.
dc.contributor.authorKavcic, M.
dc.contributor.authorSzlachetko, J.
dc.contributor.authorSzlachetko, M.
dc.date.accessioned2015-12-07T22:23:23Z
dc.identifier.issn1742-6596
dc.identifier.urihttp://hdl.handle.net/1885/20665
dc.description.abstractThe photon energy dependence of the double K-shell ionization of light atoms is reported. Experimental double-to-single photoionization cross section ratios for Mg, Al, Si and Ca were obtained from measurements of high-resolution x-ray emission spectra. The double photoionization (DPI) cross-sections for K-shell hollow atom production are compared to convergent close-coupling calculations (CCC) for neutral atoms and He-like ions. The relative importance of the initial-state and final-state electron-electron interactions to the K-shell DPI in many-electron atoms and two-electron ions is addressed. Physical mechanisms and scaling laws of the K-shell double photoionization are examined. A semiempirical universal scaling of the DPI cross sections with the effective nuclear charge for neutral atoms 2≤Z≤47 is established.
dc.publisherInstitute of Physics Publishing
dc.sourceJournal of Physics: Conference Series
dc.subjectKeywords: Convergent close-coupling calculations; Cross section; Double photoionization; He-like ions; High resolution; Hollow atoms; K-shell ionization; K-shells; Light atoms; Many-electron atoms; Neutral atoms; Nuclear charges; Photon energy; Physical mechanism;
dc.titleSingle-photon double K-shell ionization of low-Z atoms
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume212
dc.date.issued2010
local.identifier.absfor020201 - Atomic and Molecular Physics
local.identifier.ariespublicationu4860843xPUB13
local.type.statusPublished Version
local.contributor.affiliationHoszowska, J., University of Fribourg
local.contributor.affiliationKheifets, Anatoli, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationDousse, Jean-Claude, University of Fribourg
local.contributor.affiliationBray, Igor, Curtin University of Technology
local.contributor.affiliationCao, W., University of Fribourg
local.contributor.affiliationFennane, K., University of Fribourg
local.contributor.affiliationKayser, Y., University of Fribourg
local.contributor.affiliationKavcic, M., Institut Jozef Stefan
local.contributor.affiliationSzlachetko, J., University of Fribourg
local.contributor.affiliationSzlachetko, M., University of Fribourg
local.description.embargo2037-12-31
local.bibliographicCitation.startpage7
local.identifier.doi10.1088/1742-6596/212/1/012006
local.identifier.absseo970102 - Expanding Knowledge in the Physical Sciences
dc.date.updated2016-02-24T11:23:56Z
local.identifier.scopusID2-s2.0-77950656554
local.identifier.thomsonID000286419500006
CollectionsANU Research Publications

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