Computed oscillator strengths, Lande g Values, and lifetimes in Yb II

Journal Article · Fri Mar 01 00:00:00 EST 1991 · Atomic Data and Nuclear Data Tables; (United States)

DOI:https://doi.org/10.1016/0092-640X(91)90003-M· OSTI ID:5367229

Fawcett, B C ^[1]; Wilson, M ^[2]

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1. Rutherford Appleton Lab., Oxfordshire (United Kingdom)
2. Univ. of London, Surrey (United Kingdom)

Weighted oscillator strengths are tabulated for 2,745 spectral lines in Yb II. They belong to transitions between the 4f{sup 14}6s, 4f{sup 14}7s, 4f{sup 14}8s, 4f{sup 14}5d, 4f{sup 14}6d, 4f{sup 14}7d, 4f{sup 13}6s6p, and 4f{sup 13}5d6p even configurations and the 4f{sup 14}6p, 4f{sup 14}7p, 4f{sup 13}6s{sup 2}, 4f{sup 13}5d6s, and 4f{sup 13}5d{sup 2} odd configurations in Yb II. The calculations included configuration interaction between all configurations of the same parity. Lifetimes for some low-lying levels are also given including some that decay by other than electric dipole transitions. The results are compared where possible with laboratory determinations including those of recent measurements obtained from ion trap experiments. For the computations Slater integrals were first computed ab initio by a pseudo-relativistic Hartree-Fock method and subsequently adjusted by means of a least-squares optimization routine which minimizes the discrepancies between observed and computed levels. The resulting improvement in eigenvectors is verified through the close agreement of computed and measured Lande g values. Seven different coupling representation for eigenvectors were investigated. Published term designations are confirmed and extended.

• OSTI ID: 5367229
• Journal Information: Atomic Data and Nuclear Data Tables; (United States), Vol. 47:2; ISSN 0092-640X
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
YTTERBIUM IONS
ENERGY-LEVEL TRANSITIONS
LANDE FACTOR
OSCILLATOR STRENGTHS
COMPARATIVE EVALUATIONS
COMPILED DATA
CONFIGURATION INTERACTION
E1-TRANSITIONS
EIGENVECTORS
HARTREE-FOCK METHOD
LEAST SQUARE FIT
SLATER METHOD
SPECTRA
CHARGED PARTICLES
DATA
EVALUATION
INFORMATION
IONS
MAXIMUM-LIKELIHOOD FIT
MULTIPOLE TRANSITIONS
NUMERICAL DATA
NUMERICAL SOLUTION
664100* - Theory of Electronic Structure of Atoms & Molecules- (1992-)