On the excitation of the 23S, 33S and 43S states in helium by electron impact
- 1 June 1974
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic and Molecular Physics
- Vol. 7 (9), 1033-1041
- https://doi.org/10.1088/0022-3700/7/9/014
Abstract
A new plane wave approximation for calculating exchange scattering amplitudes is described and applied to the calculation of some singlet-triplet cross sections in helium. Comparison is made with experimental measurements of both total and differential cross sections. It is shown that a considerable improvement over previous techniques is obtained but that there remain significant differences between the theory presented and experimental measurement.Keywords
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