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AuthorBizau, J.M.
AuthorCubaynes, D.
AuthorGuilbaud, S.
AuthorAl-Shorman, M. M.
AuthorGharaibeh, M. F.
AuthorAbabneh, I. Q.
AuthorBlancard, C.
AuthorMcLaughlin, B. M.
Available date2015-12-22T11:09:26Z
Publication Date2015-08-03
Publication NamePHYSICAL REVIEW A
CitationBizau, J. M. et al, (2015), "K-shell photoionization of O+ and O2+ ions: Experiment and theory", Physical Review A, 92(2), 23401.
ISSN1050-2947
URIhttp://dx.doi.org/10.1103/PhysRevA.92.023401
URIhttp://hdl.handle.net/10576/3974
AbstractAbsolute cross sections for the single and double K-shell photoionization of carbon like O2+ and nitrogen like O+ ions were measured in the 526–620-eV photon energy range by employing the ion-photon merged-beam technique at the SOLEIL synchrotron radiation facility. High-resolution spectroscopy up to E/ Delta(E) ≈ 5300 was achieved. Rich resonance structures observed in the experimental spectra are analyzed and identified with the aid of R-matrix and multiconfiguration Dirac-Fock (MCDF) methods. For these two atomic oxygen ions of particular astrophysical interest we characterized the strong 1s → 2p and the weaker 1s → np (n > 2) resonances observed. A detailed comparison of the energies of the 1s → 2p resonances in the first members of the oxygen isonuclear sequence measured by synchrotron based experiments and the Chandra and XMM-Newton x-ray satellites is presented.
SponsorM.F.G.acknowledges funding from the Scientific Research Support Fund, Jordan, under Contract No. as/2/02/2010. I.Q.A. acknowledges financial support from the SESAME – Lounsbery Foundation for a training fellowship. B.M.M. acknowledges support from the U.S. National Science Foundation through a grant to ITAMP at the Harvard-Smithsonian Center for Astrophysics, the RTRA network Triangle de la Physique, and a visiting research fellowship (VRF) from Queen’s University Belfast.
Languageen
PublisherAmerican Physical Society
SubjectAtomic Physics
Plasma Physics
Photoionization
Oxtgen Ions
R-Matrix Theory
MCDF Theory
K-shell
TitleK-shell photoionization of O+ and O2+ ions: Experiment and theory
TypeArticle
Issue Number2
Volume Number92
ESSN1094-1622
dc.accessType Open Access


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