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
This publication has 37 references indexed in Scilit:
- Electron-impact excitation oflevels of helium at intermediate energiesPhysical Review A, 1979
- Electron impact excitation of the 21P and 23S levels of heliumJournal of Physics B: Atomic and Molecular Physics, 1979
- Electron scattering by atoms at intermediate energies II. Theoretical and experimental data for light atomsPhysics Reports, 1978
- Experimental-theoretical comparisons of 11S to 21P differential magnetic sublevel cross sections for electron-helium scattering at 60 eV and 80 eVJournal of Physics B: Atomic and Molecular Physics, 1975
- Electron impact excitation of the 21S state of helium at intermediate and high energiesJournal of Physics B: Atomic and Molecular Physics, 1975
- Low energy scattering of electrons by helium atomsJournal of Physics B: Atomic and Molecular Physics, 1975
- The use of second-order potentials in the theory of scattering of charged particles by atoms. IX. The excitation of hydrogen and helium to the n=2, S levels by electron impactJournal of Physics B: Atomic and Molecular Physics, 1975
- A collision cross section study of the 1 1S → 2 1P and 1 1S → 2 1S transitions in helium at kinetic energies from 200–700 eV. Failure of the Born approximation at large momentum changesThe Journal of Chemical Physics, 1975
- Electron-photon angular correlations in electron-helium collisions: measurements of complex excitation amplitudes, atomic orientation and alignmentJournal of Physics B: Atomic and Molecular Physics, 1974
- Absolute Measurement of Differential Cross Sections for Electron Scattering in HeliumPhysical Review A, 1970