Ionization in collisions between 30-1000 keV antiprotons and atomic hydrogen

K. Paludan, M. Charlton, K. Kirsebom, H. Knudsen, U. Mikkelsen, E. Morenzoni, S. P. Møller, J. Slevin, E. Uggerhøj

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Recently published data for impact of antiprotons in the energy range 30-1000 keV on atomic hydrogen are compared with analogous proton, electron, and positron measurements, and it is found that the ionization cross sections of atomic hydrogen follow the same pattern as similar cross sections obtained on He and H2 targets, in accordance with the general phenomenological description of single ionization that has developed over the last decade. Further comparisons are made with various recent and advanced theoretical calculations for antiproton ionization of atomic hydrogen. These theoretical results agree well with the data obtained, but for lower impact energies the different methods do not, despite the simplicity of the system, agree on predicting even the form of the cross section.

Original languageEnglish
Pages (from-to)490-495
Number of pages6
JournalCanadian journal of physics
Issue number7-8
Publication statusPublished - Jan 1 1996


ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Paludan, K., Charlton, M., Kirsebom, K., Knudsen, H., Mikkelsen, U., Morenzoni, E., Møller, S. P., Slevin, J., & Uggerhøj, E. (1996). Ionization in collisions between 30-1000 keV antiprotons and atomic hydrogen. Canadian journal of physics, 74(7-8), 490-495.