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    Double-K-vacancy states in electron-impact single ionization of metastable two-electron N5+(1s2s 3S1) ions

    200024_129796_PhysRevA.90.010701.pdf (445.4Kb)
    Access Status
    Open access
    Authors
    Mϋller, A.
    Borovik, A.
    Huber, K.
    Schippers, S.
    Fursa, Dmitry
    Bray, Igor
    Date
    2014
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Mϋller, A. and Borovik, A. and Huber, K. and Schippers, S. and Fursa, D. and Bray, I. 2014. Double-K-vacancy states in electron-impact single ionization of metastable two-electron N5+(1s2s 3S1) ions. Physical Review A. 90 (1): pp. 010701-1-010701-5.
    Source Title
    Physical Review A
    DOI
    10.1103/PhysRevA.90.010701
    ISSN
    1050-2947
    School
    Department of Imaging and Applied Physics
    Remarks

    Copyright © 2014 by the American Physical Society

    URI
    http://hdl.handle.net/20.500.11937/23527
    Collection
    • Curtin Research Publications
    Abstract

    The role of hollow states intermediately produced in electron-impact ionization of metastable He-like N5+(1s2s3S1) ions has been investigated in detail. A crossed-beam setup and suitable experimental techniques were employed for the measurement of accurate absolute cross sections and precise energy-scan data. Fine structures arising from K-shell excitations and associated resonances have been observed for this two-electron ion with less than ±0.5 eV uncertainty on the energy scale. Fine details, such as interference of the reaction pathways of direct ionization and excitation with capture of the incident electron followed by double-Auger decay, could be revealed. Ab initio calculations based on the convergent close coupling (CCC) approach are in good agreement with the experiment.

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