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    Convergent close-coupling calculations of positron-magnesium scattering

    Access Status
    Fulltext not available
    Authors
    Savage, Jeremy
    Fursa, Dmitry
    Bray, Igor
    Date
    2011
    Type
    Journal Article
    
    Metadata
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    Citation
    Savage, Jeremy S. and Fursa, Dmitry V. and Bray, Igor. 2011. Convergent close-coupling calculations of positron-magnesium scattering. Physical Review A. 83 (6): pp. 062709-[7pp.]
    Source Title
    Physical Review A
    DOI
    10.1103/PhysRevA.83.062709
    Additional URLs
    http://pra.aps.org
    ISSN
    1050-2947
    School
    Department of Imaging and Applied Physics
    URI
    http://hdl.handle.net/20.500.11937/9680
    Collection
    • Curtin Research Publications
    Abstract

    The single-center convergent close-coupling method has been applied to positron-magnesium scattering at incident energies from 0.01 to 100 eV. Cross sections are presented for elastic scattering and excitation of 3 1P, as well as for the total ionization and total scattering processes. We also provide an estimate of the positronium formation cross section. The results agree very well with the measurements of the total cross section by Stein et al. Nucl. Instrum. Methods Phys. Res. Sect. B 143 68 (1998)], and consistent with the positronium formation measurements of Surdutovich et al. Phys. Rev. A 68 022709 (2003)] for positron energies above the ionization threshold. For energies below the positronium formation threshold (0.8 eV) we find a large P-wave resonance at 0.17 eV. A similar resonance behavior was found by Mitroy and Bromley Phys. Rev. Lett. 98 173001 (2007)] at an energy of 0.1 eV.

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