Electron-impact ionization of Li{sup +}
- Department of Physics, Auburn University, Auburn, Alabama 36849 (United States)
- Department of Physics, Rollins College, Winter Park, Florida 32749 (United States)
Electron-impact ionization cross sections for Li{sup +} are calculated using the R matrix with pseudostates method and time-dependent close-coupling theory. The largest R-matrix calculation includes 11 spectroscopic states from the configurations 1s{sup 2}, 1s2l, and 1s3l; an additional 56 pseudostates from the configurations 1sn(bar sign)l with n(bar sign)=4-10 and l=0-3; and enough continuum orbitals to adequately describe incident energies up to 175 eV. The largest time-dependent close-coupling calculations involved 16 partial differential equations on a 300x300 point radial lattice. The nonperturbative R matrix with pseudostate and time-dependent close-coupling calculations, as well as perturbative distorted-wave calculations, are in good agreement with the crossed-beams experimental measurements of Lineberger et al. [Phys. Rev. 141, 151 (1966)], but are slightly above the Peart and Dolder [J. Phys. B 2, 872 (1968)] and Mueller et al. [Phys. Rev. Lett. 63, 758 (1989)] measurements. (c) 2000 The American Physical Society.
- OSTI ID:
- 20216404
- Journal Information:
- Physical Review. A, Journal Name: Physical Review. A Journal Issue: 5 Vol. 61; ISSN 1050-2947; ISSN PLRAAN
- Country of Publication:
- United States
- Language:
- English
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