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    Convergent close coupling calculations for positron-magnesium scattering

    Access Status
    Open access via publisher
    Authors
    Savage, J.
    Bray, Igor
    Fursa, Dmitry
    Kadyrov, Alisher
    Lugovskoy, Andrey
    Utamuratov, R.
    Date
    2012
    Type
    Conference Paper
    
    Metadata
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    Citation
    Savage, J. and Bray, I. and Fursa, D. and Kadyrov, A. and Lugovskoy, A. and Utamuratov, R. 2012. Convergent close coupling calculations for positron-magnesium scattering, in Proceedings of the XXVII International Conference on Photonic, Electronic and Atomic Collisions (ICPEAC), Jul 27- Aug 2 2011, Volume 388, Part 8: Article ID 072007. Belfast, Northern Ireland: IOP.
    Source Title
    Journal of Physics: Conference Series
    DOI
    10.1088/1742-6596/388/7/072007
    ISSN
    1742-6588
    School
    Department of Physics and Astronomy
    URI
    http://hdl.handle.net/20.500.11937/8205
    Collection
    • Curtin Research Publications
    Abstract

    While a two-centre convergent close-coupling approach to positron-magnesium scattering is developed, a single-centre method has been used to calculate total cross sections up to incident energies of 100 eV. The results agree very well with the measurements of Stein et al. [1] for positron energies above the ionisation threshold (7.6 eV). Similar accuracy is expected for energies below the positronium formation threshold (0.8 eV) where presently there are no experimental data to compare to. In this energy region we find a large p-wave resonance at 0.17 eV. Similar resonance behaviour was found in calculations by Mitroy and Bromley [2] at an energy of 0.1 eV.

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