Single-electron loss by fast (0.02-4 MeV) helium atoms in H2and He gases
- 11 January 1974
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic and Molecular Physics
- Vol. 7 (1) , 132-141
- https://doi.org/10.1088/0022-3700/7/1/022
Abstract
The single-electron loss cross section for He atoms passing through H2 and He gas targets has been studied in the impact-energy range from 20 keV to 4 MeV. He atoms were formed by charge-transfer neutralization of He+ ions in a He gas. At low energies, the cross sections were determined by beam attenuation in a transverse electrostatic field and, at higher energies, by the initial-growth method. The results were compared with Born-approximation calculations, and good agreement was found at energies above 500 keV for He in H2 and above 1200 keV for He in He.Keywords
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