Hidden crossing theory of threshold ionization of atoms by electron impact
Journal Article
·
· Physical Review Letters
- Department of Physics and Astonomy, University of Tennessee, Knoxville, Tennessee 37996-1501 (United States)
- Ioffe Physical Technical Institute, St. Petersburg (Russian Federation)
The hidden crossing theory, familiar in the context of ion-atom collisions, is adapted to the computation of ionization cross sections and spin asymmetries for electron impact on atomic hydrogen. Computed ionization cross sections and spin asymmetry agree within 10% with measurements. A rapid variation of the spin asymmetry near threshold is found, and its origin is traced to anharmonic corrections to the Wannier threshold law for triplet spin states.
- OSTI ID:
- 69285
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 23 Vol. 74; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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