Pseudo-state expansions and the second Born approximation for excitation of atomic hydrogen by proton impact
- 28 April 1979
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic and Molecular Physics
- Vol. 12 (8) , 1377-1389
- https://doi.org/10.1088/0022-3700/12/8/012
Abstract
Accurate numerical values are obtained for the probability amplitudes for excitation of hydrogen atoms by proton impact within the second Born approximation for s, p and d intermediate states. The energy range covered is from 50 to 200 keV. These values are compared with those obtained by expanding the Green's function contained in the second-order matrix element in various sets of pseudo-states based on Slater orbitals. The pseudo-state representation can provide a good representation of the contributions from the intermediate continuum states, even when only a small number of functions is employed.Keywords
This publication has 28 references indexed in Scilit:
- Electron scattering by atoms at intermediate energies II. Theoretical and experimental data for light atomsPhysics Reports, 1978
- The optical model in electron-atom scatteringJournal of Physics B: Atomic and Molecular Physics, 1977
- Impact-parameter formulation of the impulse approximation for charge exchangeJournal of Physics B: Atomic and Molecular Physics, 1977
- Electron scattering by atoms at intermediate energies: I. Theoretical modelsPhysics Reports, 1977
- Scattering of electrons by hydrogen atoms at intermediate energies: total and differential cross sections for excitation of n=2 statesJournal 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 theoretical study of proton-helium scatteringJournal of Physics B: Atomic and Molecular Physics, 1973
- A theoretical study of fast proton-atomic hydrogen scatteringJournal of Physics B: Atomic and Molecular Physics, 1973
- The use of second order potentials in the theory of the scattering of charged particles by atoms I. General theoryJournal of Physics B: Atomic and Molecular Physics, 1972
- Importance of Distortion in Inelastic Encounters Between Heavy SystemsProceedings of the Physical Society, 1959