Electron scattering by atoms and ions using the Breit-Pauli Hamiltonian: an R-matrix approach
- 14 November 1980
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic and Molecular Physics
- Vol. 13 (21) , 4299-4314
- https://doi.org/10.1088/0022-3700/13/21/022
Abstract
The R-matrix method describing the scattering of low-energy electrons by complex atoms and ions is extended to include terms of the Breit-Pauli Hamiltonian. An application is made to the astrophysically important 1s22s2 1S0e-1s22s2p 3P1o transition in Fe XXIII, where in the most accurate calculations carried out all terms of the 1s22s2, 1s22s2p and 1s22p2 configurations are included in the expansion describing the collision. This gives up to 28 coupled channels for each total angular momentum and parity which are solved on a CRAY-1. The collision strengths are increased by more than a factor of two from their non-relativistic values at all energies considered.Keywords
This publication has 19 references indexed in Scilit:
- Spectroscopy and atomic physics of highly ionized Cr, Fe, and Ni for tokamak plasmasJournal of Applied Physics, 1980
- Impact, a program for the solution of the coupled integro-differential equations of electron-atom collision theoryComputer Physics Communications, 1978
- A new version of the general program to calculate atomic continuum processes using the r-matrix methodComputer Physics Communications, 1978
- Adaptation of CIV3 to evaluate hyperfine structureComputer Physics Communications, 1976
- The R-matrix theory of electron-atom scattering using the Dirac HamiltonianJournal of Physics B: Atomic and Molecular Physics, 1975
- A general program to calculate atomic continuum processes using the R-matrix methodComputer Physics Communications, 1974
- Spin-polarization in the elastic scattering of electrons by one-electron atomsJournal of Physics B: Atomic and Molecular Physics, 1974
- A perturbation analysis of current methods of calculating relativistic energiesJournal of Physics B: Atomic and Molecular Physics, 1973
- Electron scattering by complex atomsJournal of Physics B: Atomic and Molecular Physics, 1971
- The Angular Distribution of Scattering and Reaction Cross SectionsReviews of Modern Physics, 1952