Measurement of Differential Cross Sections for the Elastic Scattering of Positrons by Argon Atoms
- 23 April 1979
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 42 (17), 1130-1133
- https://doi.org/10.1103/physrevlett.42.1130
Abstract
Direct measurements of differential scattering cross sections for positron-gas-atom collisions are reported. The apparatus used exploits the time-of-flight technique. Results for positrons of mean energy 2.2, 3.4, 6.7, and 8.7 eV elastically scattered through angles between 20° and 60° by argon atoms are presented. Sources of experimental error are discussed and comparison with recent theoretical calculations is made.Keywords
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