Excitation energies, hyperfine constants, E1, E2, and M1 transition rates, and lifetimes of 6s{sup 2}nl states in Tl I and Pb II

Journal Article · Sun May 15 04:00:00 EDT 2005 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.71.052506· OSTI ID:20717749

Safronova, U I; Safronova, M S; Johnson, W R ^[1]

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1. Physics Department, University of Nevada, Reno, Nevada 89557 (United States)

Energies of 6s{sup 2}np{sub j} (n=6-9), 6s{sup 2}ns{sub 1/2} (n=7-9), 6s{sup 2}nd{sub j} (n=6-8), and 6s{sup 2}nf{sub 5/2} (n=5-6) states in Tl I and Pb II are obtained using relativistic many-body perturbation theory. Reduced matrix elements, oscillator strengths, transition rates, and lifetimes are determined for the 72 possible 6s{sup 2}nl{sub j}-6s{sup 2}n{sup '}l{sub j{sup ''}} electric-dipole transitions. Electric-quadrupole and magnetic-dipole matrix elements are evaluated to obtain 6s{sup 2}np{sub 3/2}-6s{sup 2}mp{sub 1/2} (n,m=6,7) transition rates. Hyperfine constants A are evaluated for 6s{sup 2}np{sub j} (n=6-9), 6s{sup 2}ns{sub 1/2} (n=7-9), and 6s{sup 2}nd{sub j} (n=6-8) states in {sup 205}Tl. First-, second-, third-, and all-order corrections to the energies and matrix elements and first- and second-order Breit corrections to energies are calculated. In our implementation of the all-order method, single and double excitations of Dirac-Fock wave functions are included to all orders in perturbation theory. These calculations provide a theoretical benchmark for comparison with experiment and theory.

• OSTI ID: 20717749
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 5 Vol. 71; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
BENCHMARKS
COMPARATIVE EVALUATIONS
CORRECTIONS
E1-TRANSITIONS
EXCITATION
EXCITED STATES
HYPERFINE STRUCTURE
LIFETIME
M1-TRANSITIONS
MAGNETIC DIPOLES
MANY-BODY PROBLEM
MATRIX ELEMENTS
OSCILLATOR STRENGTHS
PERTURBATION THEORY
QUADRUPOLES
RELATIVISTIC RANGE
THALLIUM 205
WAVE FUNCTIONS