Author:
Paludan K.,Knudsen H.,Mikkelsen U.,Charlton M.,Kirsebom K.,Møller S. P.,Uggerhøj E.,Morenzoni E.,Slevin J.
Abstract
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.
Publisher
Canadian Science Publishing
Subject
General Physics and Astronomy
Cited by
3 articles.
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1. Current status of antiproton impact ionization of atoms and molecules: theoretical and experimental perspectives;Journal of Physics B: Atomic, Molecular and Optical Physics;2011-06-01
2. Anti-proton and proton impact excitation–ionization of helium including resonant decay;Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms;1998-08
3. Atomic collisions with antiprotons present and future programs;Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms;1998-02