Ionization of atomic hydrogen by positron impact
Journal Article
·
· Physical Review Letters; (USA)
- Fakultaet fuer Physik, Universitaet Bielefeld, D-4800 Bielefeld 1, Federal Republic of Germany (DE)
In a crossed-beam experiment the angle-integrated ionization cross section for both positron and electron impact on atomic hydrogen (excluding positronium formation) has been measured in the energy region of 17.5 to 600 eV. Below 450 eV the positron cross section is larger than the electron one, at 50 eV by about a factor of 2. Absolute cross sections are obtained by comparing the electron data with literature values. At energies above 30 eV all theoretical predictions lie below our measured cross sections for positron-impact ionization.
- OSTI ID:
- 6829789
- Journal Information:
- Physical Review Letters; (USA), Journal Name: Physical Review Letters; (USA) Vol. 64:9; ISSN PRLTA; ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
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