Title: Ionization of helium, neon and xenon by positron impact
Abstract: Single ionization of xenon and double ionization of helium, neon and xenon by positron impact have been studied at energies from threshold to ~1 keV. The total single ionization cross section of xenon is seen to behave as expected. In particular, single ionization with positronium formation is a strong channel at low energies. For double ionization we found that positronium formation is strongly suppressed and makes no contribution to the total cross section in the light noble gases, while some evidence for this channel is observed in xenon.
Publication Year: 1999
Publication Date: 1999-11-03
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 26
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