Abstract
This review covers the recent experimental results on positron-impact ionization as well as results which can be expected in the near future. Topics of other Workshop reviews such asPs formation andinner-shell ionization are not included here. Insingle ionization, interesting new developments are the comparison of positron/electron impact with proton/antiproton impact, cross-section measurements for atomic hydrogen, and threshold studies with H2 and noble-gas atoms. Indouble and triple ionization, some level of completion has been reached; further work along this line is to be expected when improved energy resolution will permit studying multi-ionization threshold behavior. The above remarks concerntotal ionization cross sections, the only type measured so far. Two experiments onsingle-differential and one ondouble-differential cross sections are on the way.Triple-differential measurements would be very interesting, but are not yet feasible.
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Raith, W. Positron-impact ionization of atoms: Experiments. Hyperfine Interact 73, 3–16 (1992). https://doi.org/10.1007/BF02628205
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DOI: https://doi.org/10.1007/BF02628205