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    Internal consistency in the close-coupling approach to positron collisions with atoms

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    Authors
    Bray, Igor
    Bailey, J.
    Fursa, D.
    Kadyrov, A.
    Utamuratov, R.
    Date
    2016
    Type
    Journal Article
    
    Metadata
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    Citation
    Bray, I. and Bailey, J. and Fursa, D. and Kadyrov, A. and Utamuratov, R. 2016. Internal consistency in the close-coupling approach to positron collisions with atoms. European Physical Journal D. 70 (6): pp. 1-6.
    Source Title
    EUROPEAN PHYSICAL JOURNAL D
    DOI
    10.1140/epjd/e2015-60591-7
    ISSN
    1434-6060
    School
    Department of Physics and Astronomy
    URI
    http://hdl.handle.net/20.500.11937/2672
    Collection
    • Curtin Research Publications
    Abstract

    The positron-atom scattering problem contains the rearrangement channel of positronium (Ps) formation. While this makes the problem particularly difficult to calculate, it has the unusual benefit of validation via consideration of the internal consistency of the vastly different one- and two-centre close-coupling approaches. For example, the ionisation cross section in the former must be the same as the sum of breakup and Ps formation cross sections in the latter. This places a severe test on both approaches, which we review here for positron scattering on hydrogen and helium atoms.

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