Multiconfigurational Hartree-Fock calculations of hyperfine-induced transitions in heliumlike ions
- Laboratoire de Chimie Physique Moleculaire, Universite Libre de Bruxelles, Code Postal 160/09, 50 avenue F. Roosevelt, B-1050, Brussels (Belgium)
- Department of Physics, Lund Institute of Technology, P.O. Box 118, S-22100 Lund (Sweden)
- Department of Computer Science, Vanderbilt University, Nashville, Tennessee 37235 (United States)
We are investigating the hyperfine quenching of 1[ital s]2[ital p] [sup 3][ital P][sub 0][sup [ital o]] for the three heliumlike ions [sup 19]F[sup 7+], [sup 23]Na[sup 9+], and [sup 27]Al[sup 11+] in the multiconfigurational Hartree-Fock-Breit-Pauli scheme. The configuration expansions are generated with the active-space method and are increased in a systematic way, allowing the convergence of the calculated parameters to be studied. A careful comparison is done with the pioneering work of Mohr using a perturbation approach [[ital Beam]-[ital Foil] [ital Spectroscopy], [ital Atomic] [ital Structure] [ital and] [ital Lifetimes], edited by I. Sellin and D. Pegg (Plenum, New York, 1976), Vol. 1, pp. 97--103]. In the present calculations the orbital and spin-dipole magnetic contributions, which were previously neglected, are added to the dominant Fermi contact interaction term and a detailed analysis of the hyperfine induced transition rate is done in order to learn how to get an accurate description of the property in the multiconfiguration Hartree-Fock-Breit-Pauli approximation.
- OSTI ID:
- 6585146
- Journal Information:
- Physical Review A; (United States), Vol. 51:3; ISSN 1050-2947
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ISOELECTRONIC ATOMS
ENERGY-LEVEL TRANSITIONS
ALUMINIUM IONS
DIPOLE MOMENTS
FLUORINE IONS
HARTREE-FOCK METHOD
HYPERFINE STRUCTURE
SODIUM IONS
ATOMS
CALCULATION METHODS
CHARGED PARTICLES
IONS
664200* - Spectra of Atoms & Molecules & their Interactions with Photons- (1992-)