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 00:00:00 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, Vol. 81, Issue 5; Other Information: DOI: 10.1103/PhysRevA.81.052506; (c) 2010 The American Physical Society; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

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