Excitation of atomic hydrogen by electron impact in an on-shell Faddeev-Watson approximation
- 28 March 1983
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic and Molecular Physics
- Vol. 16 (6), 1077-1088
- https://doi.org/10.1088/0022-3700/16/6/021
Abstract
The second-order Faddeev-Watson approximation is applied to the excitation of atomic hydrogen by electron impact. By restricting the total kinetic energy of the electrons in the intermediate state to the three-body energy shell a simplification is effected when approximates the dynamics to a double Coulomb binary encounter. The resulting transition matrix elements involve multi-dimensional integrals which are evaluated numerically. Although the model fails for low momentum transfers it predicts differential cross sections and angular correlation parameters for electron-hydrogen excitation which are in reasonable agreement with experiment at high momentum transfers.Keywords
This publication has 17 references indexed in Scilit:
- Scattering of electrons by atomsAdvances in Physics, 1980
- Exact second Born amplitude for the electron impact excitation of the 1s to 2s transition in atomic hydrogenJournal of Physics B: Atomic and Molecular Physics, 1980
- Ratio of1s−2sand1s−2pExcitation of Atomic Hydrogen by Electron ImpactPhysical Review Letters, 1980
- The form of electron-atom excitation amplitudes at high momentum transfers in the Faddeev-Watson approximationJournal of Physics B: Atomic and Molecular Physics, 1979
- Angular correlation parameters for 1s-2p excitation of hydrogen calculated in the distorted-wave approximationJournal of Physics B: Atomic and Molecular Physics, 1977
- Excitation of thestate of atomic hydrogen by electron impact in the distorted-wave approximationPhysical Review A, 1976
- Inelastic electron scattering off of simple atoms for large-momentum-transfer collisionsPhysical Review A, 1976
- Difficulties with the Faddeev-Watson multiple scattering expansion in atomic physicsJournal of Physics B: Atomic and Molecular Physics, 1973
- Multiple-Scattering Expansions for Nonrelativistic Three-Body Collision Problems. VIII. Eikonal Approximation for the Faddeev-Watson Multiple-Scattering ExpansionPhysical Review A, 1973
- A note on the off-shell Coulomb T matrix. II. Elastic e-H differential cross sectionsJournal of Physics B: Atomic and Molecular Physics, 1972