Electron scattering by atomic hydrogen: Elastic and inelastic phenomena at 13.9–200 eV
- 1 November 1991
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 44 (9) , 5586-5598
- https://doi.org/10.1103/physreva.44.5586
Abstract
A six-state coupled-channel optical potential for electron-atom scattering is applied to electron-hydrogen scattering at energies of 13.87, 16.46, 19.58, 35, 40, 54.4, 100, and 200 eV. The n=1, 2, and 3 channels are coupled explicitly, whereas the rest of the excited states of the atom including the continuum are taken into account via the ab initio complex nonlocal polarization potential. The differential and integrated cross sections, as well as the exchange asymmetries for n=1 and 2 channels, the total cross section, and the λ, R, and I parameters for the 2p excitation, are presented at each energy. The ratio of differential cross sections for n=1 to 2, and for 2s to 2p, and the 2s+2p differential cross sections are found to be in good agreement with experiment. There are still some discrepancies between experiment and theory for the 2p angular correlation parameters λ, R, and I.Keywords
This publication has 21 references indexed in Scilit:
- Coupled-channel optical calculation of electron-hydrogen scattering: Elastic scattering from 0.5 to 30 eVPhysical Review A, 1991
- Internal consistency of the coupled-channels optical calculation for e-H scatteringJournal of Physics B: Atomic, Molecular and Optical Physics, 1991
- Electron scattering by atomic hydrogen at intermediate energies. II. Differential elastic, 1s-2s and 1s-2p cross sections and 1s-2p electron-photon coincidence parametersJournal of Physics B: Atomic, Molecular and Optical Physics, 1991
- Convergence of anapproach in the coupled-channel optical-potential method fore-H scatteringPhysical Review A, 1991
- Coupled-channel optical calculation of electron-hydrogen scattering: The distorted-wave optical potentialPhysical Review A, 1990
- Electron-photon angular correlations in the electron impact excitation of H(2p)Journal of Physics B: Atomic and Molecular Physics, 1979
- Numerical study of the dispersion relation for e--H scatteringJournal of Physics B: Atomic and Molecular Physics, 1977
- The 2S and 2P state excitation of atomic hydrogen by electron impactJournal of Physics B: Atomic and Molecular Physics, 1976
- Scattering of electrons by hydrogen atoms at intermediate energies: Elastic differential cross sections from 10 to 30 eVPhysical Review A, 1975
- Electron scattering from atomic hydrogen. III. Absolute differential cross sections for elastic scattering of electrons of energies from 20 to 680 eVJournal of Physics B: Atomic and Molecular Physics, 1975