A theoretical study of fast electron-helium scattering
- 1 June 1974
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic and Molecular Physics
- Vol. 7 (8), 938-949
- https://doi.org/10.1088/0022-3700/7/8/015
Abstract
The second order diagonalization method with a twenty two states basis (11S to 51D) is used to study electron-helium scattering. The differential cross sections for the excitation of the n=2 levels reproduce fairly well the experimental data up to large angles (60 degrees or more) at energies above 50 eV. Total cross sections for the 12S-n1S and 11S-n1D transitions (n=3, 4, 5) are also in good agreement with experiment and improve greatly the first and second order Born results. The agreement between the 11S-n1P cross sections and experiment is satisfactory only above 150 eV. The polarization of the 31P-21S and 31D-21P lines are also calculated and are in relatively good agreement with the experimental data.Keywords
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