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    Convergent close-coupling method for positron scattering from noble gases

    187138_65236_Convergent_close-couplingmethod_of_positron_scattering_from_noble_gases.pdf (708.4Kb)
    Access Status
    Open access
    Authors
    Fursa, Dmitry
    Bray, Igor
    Date
    2012
    Type
    Journal Article
    
    Metadata
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    Citation
    Fursa, Dmitry and Bray, Igor. 2012. Convergent close-coupling method for positron scattering from noble gases. New Journal of Physics. 14: pp. 1-18.
    Source Title
    New Journal of Physics
    DOI
    10.1088/1367-2630/14/3/035002
    ISSN
    1367-2630
    Remarks

    Copyright © 2012 IOP Institute of Physics. The Version of Record is available online at http://dx.doi.org/10.1088/1367-2630/14/3/035002

    URI
    http://hdl.handle.net/20.500.11937/8290
    Collection
    • Curtin Research Publications
    Abstract

    We present the convergent close-coupling formulation for positron scattering from noble gases (Ne, Ar, Kr and Xe) within the single-center approximation. Target functions are described in a model of six p-electrons above an inert Hartree–Fock core with only one-electron excitations from the outer p6 shell allowed. Target states have been obtained using a Sturmian (Laguerre) basis in order to model coupling to ionization and positronium (Ps) formation channels. Such an approach is unable to yield explicit Ps-formation cross sections, but is valid below this threshold and above the ionization threshold. The present calculations are found to show good agreement with recent measurements.

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