Relativistic many-body calculation of energies, lifetimes, hyperfine constants, multipole polarizabilities, and blackbody radiation shift in {sup 137}Ba ii

Journal Article · Sat May 15 04:00:00 EDT 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.81.052506· OSTI ID:21408818

Safronova, U I ^[1]

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1. Physics Department, University of Nevada, Reno, Nevada 89557 (United States) and Institute of Spectroscopy, Russian Academy of Science, Troitsk, Moscow (Russian Federation)

Excitation energies of the [Xe]ns{sub 1/2}, [Xe]np{sub j}, and [Xe]nd{sub j} (n{<=} 12 and [Xe]=1s{sup 2}2s{sup 2}2p{sup 6}3s{sup 2}3p{sup 6}3d{sup 10}4s{sup 2}4p{sup 6}4d{sup 10}5s{sup 2}5p{sup 6}) in Ba ii are evaluated. First-, second-, third-, and all-order Coulomb energies and first- and second-order Coulomb-Breit energies are calculated. Electric-dipole (6s{sub 1/2}-np{sub j}, n=6-26), electric-quadrupole (6s{sub 1/2}-nd{sub j}, n=5-26), and electric-octupole (6s{sub 1/2}-nf{sub j}, n=4-26) matrix elements are calculated to obtain the ground-state E1, E2, and E3 static polarizabilities. Scalar polarizabilities of the ns{sub 1/2}, np{sub j}, and nd{sub j} states and tensor polarizabilities of the np{sub 3/2} and nd{sub j} excited states of Ba{sup +} are evaluated. All aforementioned matrix elements are determined using the relativistic all-order method. The hyperfine structure in {sup 137}Ba ii is also investigated. The hyperfine A and B values are determined for the first low-lying levels up to n=9. The quadratic Stark effect on hyperfine structure levels of {sup 137}Ba ii ground state is investigated. The calculated shift for the (F=2, M=0) {r_reversible} (F=1, M=0) transition is -0.2931 Hz/(kV/cm){sup 2}, in agreement with a previous theoretical result, -0.284(3)). These calculations provide a theoretical benchmark for comparison with experiment and theory.

• OSTI ID: 21408818
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 5 Vol. 81; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ALKALINE EARTH ISOTOPES
BARIUM 137
BARIUM ISOTOPES
BENCHMARKS
BLACKBODY RADIATION
COMPARATIVE EVALUATIONS
COULOMB ENERGY
DIPOLES
ELECTRIC DIPOLES
ELECTRICAL PROPERTIES
ELECTROMAGNETIC RADIATION
ENERGY
ENERGY LEVELS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EVALUATION
EVEN-ODD NUCLEI
EXCITATION
EXCITED STATES
GROUND STATES
HYPERFINE STRUCTURE
INTERMEDIATE MASS NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
LIFETIME
MANY-BODY PROBLEM
MATRIX ELEMENTS
MINUTES LIVING RADIOISOTOPES
MULTIPOLES
NUCLEI
OCTUPOLES
PHYSICAL PROPERTIES
POLARIZABILITY
RADIATIONS
RADIOISOTOPES
RELATIVISTIC RANGE
SCALARS
STABLE ISOTOPES
STARK EFFECT
TENSORS