Theoretical investigation of barium-helium collisions. I. The adiabatic potential curves
- Institut fuer Physik, Universitaet Hohenheim, Garbenstrasse 30, 70599 Stuttgart (Germany)
- Department of Physics and JILA, University of Colorado, Boulder, Colorado 80309-0440 (United States)
Collisions between ground-state helium atoms and excited barium atoms in the (6p){sup 3}P{sub J}, (5d){sup 1}D{sub 2}, and (5d){sup 3}D{sub J} states are treated theoretically. Born-Oppenheimer potential curves are calculated with a combination of semiempirical model potentials and pseudopotentials to represent the interactions between the valence electrons of the barium atom and the closed-shell cores. The molecular basis set is constructed from numerical eigenstates of the Ba{sup +} ion. Spin-orbit coupling is included explicitly in the e{sup {minus}}-Ba{sup 2+} interaction Hamiltonian. We report higher-lying potential curves correlated with the metastable (5d{sup 2}){sup 3}F{sub J} states. {copyright} {ital 1997} {ital The American Physical Society}
- OSTI ID:
- 538508
- Journal Information:
- Physical Review A, Journal Name: Physical Review A Journal Issue: 3 Vol. 56; ISSN 1050-2947; ISSN PLRAAN
- Country of Publication:
- United States
- Language:
- English
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