Positron impact ionization of atomic hydrogen

G. O. Jones, M. Charlton, J. Sievin, G. Laricchia, E R Köv E R, M. R. Poulsenil, S. Nic Chormaic

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Ionization cross sections for positrons impacting on atomic hydrogen have been measured for kinetic energies in the range 15-700 eV. This has been done in a crossed-beam geometry where a magnetically guided positron beam intersects a hydrogen gas jet emanating from a radio frequency discharge tube. Electron impact ionization cross sections were also measured with the same apparatus thus facilitating comparison with, and normalization to, published results. The positron-atomic hydrogen results are found to be significantly lower than those obtained by Spicher et at.

Original languageEnglish
Pages (from-to)483-488
Number of pages6
JournalJournal of Physics B: Atomic, Molecular and Optical Physics
Issue number15
Publication statusPublished - Aug 14 1993


ASJC Scopus subject areas

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

Cite this

Jones, G. O., Charlton, M., Sievin, J., Laricchia, G., Köv E R, E. R., Poulsenil, M. R., & Chormaic, S. N. (1993). Positron impact ionization of atomic hydrogen. Journal of Physics B: Atomic, Molecular and Optical Physics, 26(15), 483-488. https://doi.org/10.1088/0953-4075/26/15/009