The electron impact excitation of the 21P state of helium in the eikonal-Born series approximation
- 21 December 1977
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic and Molecular Physics
- Vol. 10 (18) , L727-L730
- https://doi.org/10.1088/0022-3700/10/18/010
Abstract
The eikonal-Born series approximation is used to study the excitation of the 21P state of helium by 200-500 eV electron impact. The differential cross sections are in excellent agreement with recent absolute measurements, particularly at the higher energies. In contrast to this, further work is required to obtain satisfactory values of the angular correlation parameters.Keywords
This publication has 15 references indexed in Scilit:
- Excitation of atomic hydrogen in the eikonal-Born-series approximationPhysical Review A, 1976
- Electron impact excitation of the 21S state of helium at intermediate and high energiesJournal of Physics B: Atomic and Molecular Physics, 1975
- Second Born approximation to electron and positron impact excitations of the 11S to 21S transition in heliumJournal 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
- Elastic Electron-Atom Scattering at Intermediate EnergiesPhysical Review A, 1973
- Absolute Measurement of Differential Cross Sections for Electron Scattering in HeliumPhysical Review A, 1970
- Application of a simplified second Born approximation to the scattering of electrons and protons by hydrogen atomsJournal of Physics B: Atomic and Molecular Physics, 1968
- Correlation Effects in Atoms. I. HeliumPhysical Review B, 1966
- The Theory and Calculation of Screening ConstantsPhysical Review B, 1930