Smooth exterior complex-scaling, full-angular-momentum, and three-dimensional finite-element method applied to doubly excited states of helium
Journal Article
·
· Physical Review. A
- Department of Physics, Stockholm University, Alba Nova University Center, SE-106 91 Stockholm (Sweden)
- Institute for Physics, St. Petersburg University, Uljanovskaya 1, St. Petersburg 198904 (Russian Federation)
A technique based on the total-angular-momentum representation the smooth exterior complex-scaling procedure, and the three-dimensional finite-element method, is applied to calculations of S, P, and D resonant, so-called doubly excited, states of the helium atom. The resonances are calculated with an accuracy better than 10{sup -5} a.u. The applicability of an extrapolation procedure to complex energies is analyzed.
- OSTI ID:
- 20636556
- Journal Information:
- Physical Review. A, Journal Name: Physical Review. A Journal Issue: 6 Vol. 67; ISSN 1050-2947; ISSN PLRAAN
- Country of Publication:
- United States
- Language:
- English
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