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    Convergent-close-coupling formalism for positron scattering from molecules

    193514_97967_PhysRevA.87.020701_1_.pdf (254.0Kb)
    Access Status
    Open access
    Authors
    Zammit, Mark
    Fursa, Dmitry
    Bray, Igor
    Date
    2013
    Type
    Journal Article
    
    Metadata
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    Citation
    Zammit, Mark C. and Fursa, Dmitry V. and Bray, Igor. 2013. Convergent-close-coupling formalism for positron scattering from molecules. Physical Review A. 87 (2): pp. 020701-(R)1 - 020701-(R)-4.
    Source Title
    Physical Review A
    DOI
    10.1103/PhysRevA.87.020701
    ISSN
    1050-2947
    Remarks

    Copyright © 2013 by the American Physical Society

    URI
    http://hdl.handle.net/20.500.11937/15460
    Collection
    • Curtin Research Publications
    Abstract

    The ab initio convergent-close-coupling method has been extended to positron-molecule collisions within the adiabatic (fixed-nuclei) approximation. Application to molecular hydrogen at energies from 0.1 to 1000 eV has yielded convergent total ionization and grand total cross sections over most of the energy range. We find that very large calculations are required for convergence, even in the case of low-energy elastic scattering, due to the effects of positronium formation. In general, the comparison with experiment is good.

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