The 11S to 21S and 11S to 21P excitation of helium by electron impact
- 14 June 1980
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic and Molecular Physics
- Vol. 13 (11), 2309-2325
- https://doi.org/10.1088/0022-3700/13/11/022
Abstract
The R-matrix method calculations of Berrington et al. (1975) and Fon et al. (1979) are extended to the energy ranges 21.41S and 21P state of helium. Differential and integrated cross sections for these transitions and the ( lambda , chi ) parameters for the 21P excitation are calculated and compared with the recent theoretical calculations and experimental measurements.Keywords
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