All-order perturbation calculation of energies, hyperfine constants, multipole polarizabilities, and blackbody radiation shift in {sup 87}Sr{sup +}
- 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 [Kr]ns{sub 1/2}, [Kr]np{sub j}, [Kr]nd{sub j}, and [Kr]nf{sub j} (n{<=}9 and [Kr]=(1s{sup 2}2s{sup 2}2p{sup 6}3s{sup 2}3p{sup 6}3d{sup 10}4s{sup 2}4p{sup 6}) in Sr ii are evaluated. First-order, second-order, third-order, and all-order Coulomb energies and first-order and second-order Coulomb-Breit energies are calculated. Reduced matrix elements, oscillator strengths, transition rates, and lifetimes are determined for the levels up to n=7. Electric-dipole (5s{sub 1/2}-np{sub j}, n=5-26), electric-quadrupole (5s{sub 1/2}-nd{sub j}, n=4-26), and electric-octupole (5s{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 and tensor polarizabilities for the 5p{sub j}-9p{sub j} and 4d{sub j}-8d{sub j} excited states in Sr ii are also calculated. All the above-mentioned matrix elements are determined using the all-order method. We also investigate the hyperfine structure in {sup 87}Sr{sup +}. The hyperfine A values and B values are determined for the first low-lying levels up to n=7. The quadratic Stark effect on hyperfine-structure levels of the {sup 87}Sr{sup +} ground state is investigated. The calculated shift for the (F=5,M=0){r_reversible}(F=4,M=0) transition is found to be 0.120(1) Hz/(kV/cm){sup 2}. These calculations provide a theoretical benchmark for comparison with the experiment and theory. A careful study of uncertainty of our calculations is carried out for the transition-matrix elements, line strengths, transition rates, lifetimes, polarizabilities, and the Stark shift coefficient.
- OSTI ID:
- 21448487
- Journal Information:
- Physical Review. A, Vol. 82, Issue 2; Other Information: DOI: 10.1103/PhysRevA.82.022504; (c) 2010 The American Physical Society; ISSN 1050-2947
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
BLACKBODY RADIATION
COMPARATIVE EVALUATIONS
COULOMB ENERGY
E1-TRANSITIONS
E2-TRANSITIONS
ELECTRIC DIPOLES
EXCITATION
EXCITED STATES
HYPERFINE STRUCTURE
LIFETIME
MATRIX ELEMENTS
OCTUPOLES
OSCILLATOR STRENGTHS
POLARIZABILITY
SCALARS
STARK EFFECT
STRONTIUM IONS
TENSORS
CHARGED PARTICLES
DIPOLES
ELECTRICAL PROPERTIES
ELECTROMAGNETIC RADIATION
ENERGY
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EVALUATION
IONS
MULTIPOLE TRANSITIONS
MULTIPOLES
PHYSICAL PROPERTIES
RADIATIONS