Positron-argon elastic, positronium formation and ionizing collisions at 60°

R. M. Finch, Á Kövér, M. Charlton, G. Laricchia

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The energy dependencies of the differential cross sections for elastic scattering, positronium formation and direct single ionization in positron-argon collisions at 60° are reported in the energy range 40-150 eV. Of particular interest is the region from 55-60 eV, where earlier measurements by Dou and co-workers found a drop in the elastic scattering cross section by a factor of two. This structure was tentatively attributed to a cross-channel coupling effect with an open inelastic scattering channel. No structure has been found in the three differential cross sections presented herein.

Original languageEnglish
Pages (from-to)L667-L672
JournalJournal of Physics B: Atomic, Molecular and Optical Physics
Issue number17
Publication statusPublished - Sep 14 1996


ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics

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