Forward angle scattering effects in the measurement of total cross sections for positron scattering

J. P. Sullivan, C. Makochekanwa, A. Jones, P. Caradonna, D. S. Slaughter, J. Machacek, R. P. McEachran, D. W. Mueller, S. J. Buckman

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    91 Citations (Scopus)

    Abstract

    Measurements of total scattering by positron impact have typically excluded a significant portion of the forward scattering angles of the differential cross section. This paper demonstrates the effect that this can have on measurements of the total cross section. We show that much of the apparent disagreement between experimental measurements of positron scattering from atoms and molecules may be explained by this excluded angular range. It is shown that this same effect may also lead to an anomalous energy dependence of some cross sections.

    Original languageEnglish
    Article number035201
    JournalJournal of Physics B: Atomic, Molecular and Optical Physics
    Volume44
    Issue number3
    DOIs
    Publication statusPublished - 14 Feb 2011

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