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    Two-center convergent close-coupling calculations for positron-lithium collisions

    192808_192808.pdf (163.6Kb)
    Access Status
    Open access
    Authors
    Lugovskoy, Andrey
    Kadyrov, Alisher
    Bray, Igor
    Stelbovics, Andris
    Date
    2010
    Type
    Journal Article
    
    Metadata
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    Citation
    Lugovskoy, A.V. and Kadyrov, A.S. and Bray, I. and Stelbovics, A.T. 2010. Two-center convergent close-coupling calculations for positron-lithium collisions. Physical Review A. 82 (6): pp. 062708 (6).
    Source Title
    Physical Review A
    DOI
    10.1103/PhysRevA.82.062708
    ISSN
    1050-2947
    Remarks

    Copyright © 2010 by the American Physical Society

    URI
    http://hdl.handle.net/20.500.11937/19376
    Collection
    • Curtin Research Publications
    Abstract

    We report on two-center convergent close-coupling calculations of positron-lithium collisions. The target is treated as one active electron interacting with an inert ion core. The positronium formation channels are taken into account explicitly utilizing both negative- and positive-energy Laguerre-based states. A large number of channels and high partial waves are used to ensure the convergence of the cross sections. We find the Ramsauer-Townsend minimum in total and elastic cross sections at an impact energy E of about 0.0016 eV. As found previously forH and He, the contributions to the breakup cross section from both the Li and the Ps centers become the same as the threshold is approached.

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