Positron Scattering from Molecules: An Experimental Cross Section Compilation for Positron Transport Studies and Benchmarking Theory

Michael Brunger, S Buckman, Kurunathan Ratnavelu

    Research output: Contribution to journalArticle

    30 Citations (Scopus)

    Abstract

    We present a compilation of recommended positron-molecule cross sections for a range of scattering processes including elastic scattering, vibrational excitation, discrete electronic-state excitation, positronium formation, ionization, and also for the grand total cross section. Where possible, in particular for possible application in positron transport simulations for a given molecule, we try and list data for energies in the range 0.1-1000 eV although in practice the actual energy is highly target-molecule and scattering process specific. Aside from being relevant to positron transport studies, through, for example, Monte Carlo simulations, the present compilation should also be germane for benchmarking the validity and accuracy of positron-molecule scattering calculations and, just as importantly, to allow a comparison with corresponding electron scattering results. That latter comparison can shed real light on the projectile-target interactions that underpin the scattering dynamics.

    Original languageEnglish
    Article number023102
    Pages (from-to)023102-1-023102-53
    Number of pages53
    JournalJournal of Physical and Chemical Reference Data
    Volume46
    Issue number2
    DOIs
    Publication statusE-pub ahead of print - 2017

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