Positron-helium scattering cross sections at low energies
- 21 October 1977
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic and Molecular Physics
- Vol. 10 (15) , L569-L572
- https://doi.org/10.1088/0022-3700/10/15/006
Abstract
Experimental determinations of the elastic scattering cross sections for 2-18 eV positrons in helium have been made using a time-of-flight system specifically designed to achieve statistically accurate low-energy measurements. The cross sections are in close agreement with those of Kauppila et al. (1976) but differ at positron energies below 6 eV from the earlier measurements of Canter et al. (1972) and from the recent theoretical results of Campeanu et al. (1977).Keywords
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