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    Heating due to momentum transfer in low-energy positronium-antiproton scattering

    Access Status
    Fulltext not available
    Authors
    Charlton, M.
    Kadyrov, Alisher
    Bray, I.
    Date
    2016
    Type
    Journal Article
    
    Metadata
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    Citation
    Charlton, M. and Kadyrov, A. and Bray, I. 2016. Heating due to momentum transfer in low-energy positronium-antiproton scattering. Physical Review A. 94 (3): Article ID 032701.
    Source Title
    Physical Review A
    DOI
    10.1103/PhysRevA.94.032701
    ISSN
    2469-9926
    School
    Department of Physics and Astronomy
    URI
    http://hdl.handle.net/20.500.11937/30811
    Collection
    • Curtin Research Publications
    Abstract

    We investigate the consequences of unexpectedly large elastic cross sections for the scattering of low-energy antiprotons from n≤3 positronium (Ps) on the experimental implementation of antihydrogen formation via Ps-antiproton collisions. The integrated elastic cross sections, obtained using the two-center convergent close-coupling theory, can be up to three orders of magnitude greater than their counterparts for antihydrogen formation. The differential momentum transfer cross sections, which suppress the large cross sections at forward scattering angles, show remarkably rich behavior across all scattering angles. We discuss the implications of these findings for the heating, via momentum transfer, of clouds of trapped antiprotons that are typically used for the creation of antihydrogen.

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