Positron scattering from xenon

L. A. Parcell, R. P. McEachran, A. D. Stauffer

    Research output: Contribution to journalArticle

    10 Citations (Scopus)

    Abstract

    The elastic cross-sections for positron scattering from Xe have been determined by the polarized-orbital method while the excitation cross-sections have been calculated within a distorted wave framework in an energy range up to 200 eV. The total cross-section is compared with available experimental results for xenon. We analyze the relative contributions to the total cross-section of our elastic and excitation cross-sections and of the cross-sections for positronium formation and for ionization from other publications. We compare these results with experimental measurements for the total cross-section. Our results are in satisfactory agreement with the experimental measurements at low energies, but differ at energies where positronium formation is important. At energies above 100 eV our total cross-section is displaced above the experimental curve by 20%, suggesting a systematic error either in the experimental results or in one or more of our theoretical calculations.
    Original languageEnglish
    Pages (from-to)180-184
    Number of pages5
    JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
    Volume192
    Issue number1-2
    DOIs
    Publication statusPublished - 2002

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