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    Convergent close-coupling calculations of helium single ionization by antiproton impact

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    Authors
    Abdurakhmanov, Ilkhom
    Kadyrov, Alisher
    Fursa, Dmitry
    Bray, Igor
    Stelbovics, Andris
    Date
    2011
    Type
    Journal Article
    
    Metadata
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    Citation
    Abdurakhmanov, I. B. and Kadyrov, A. S. and Fursa, D. V. and Bray, I. and Stelbovics, A. T. 2011. Convergent close-coupling calculations of helium single ionization by antiproton impact. Physical Review A. 84 (6): pp. 062708-[6 pp.]
    Source Title
    Physical Review A
    DOI
    10.1103/PhysRevA.84.062708
    ISSN
    1050-2947
    School
    Department of Imaging and Applied Physics
    URI
    http://hdl.handle.net/20.500.11937/5448
    Collection
    • Curtin Research Publications
    Abstract

    We apply the fully quantum-mechanical convergent close-coupling method to the calculation of antiproton scattering on the ground state of helium. The helium target is treated as a three-body Coulomb system using frozen-core and multiconfiguration approximations. The electron-electron correlation of the target is fully treated in both cases. Though both calculations yield generally good agreement with experiment for the total ionization cross sections, the multiconfiguration results are substantially higher at the lower energies than the frozen-core ones. Calculated longitudinal ejected electron and recoil-ion momentum distributions for the single ionization of helium are in good agreement with the experiment.

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