Hyperfine structures in sup 167 Er II: Measurements of high 4 f sup 12 5 d levels and ab initio multiconfiguration Dirac-Fock calculations

Journal Article · Fri Dec 01 04:00:00 EST 1989 · Physical Review (Section) A: General Physics; (USA)

DOI:https://doi.org/10.1103/PhysRevA.40.6281· OSTI ID:7163707

Andersen, L U.A.; Childs, W J; Nielsen, U; Poulsen, O ^[1]

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1. Institute of Physics, University of Aarhus, DK-8000 Aarhus C, Denmark (DK)

Hyperfine-structure measurements in high 4{ital f}{sup 12}5d metastable levels of {sup 167}Er II have been carried out to supplement earlier data on the low 4{ital f}{sup 12}6{ital s} levels. {ital Ab initio} multiconfiguration Dirac-Fock (MCDF) calculations have been performed, and the effects of core excitations and configuration interaction have been investigated. While good agreement between experiment and calculation was found for the low 6{ital s} levels, a less clear interpretation emerges from the higher 6{ital d} levels. This points directly to the problems in the MCDF scheme in understanding the effects of core excitation and configuration interaction.

• OSTI ID: 7163707
• Journal Information: Physical Review (Section) A: General Physics; (USA), Journal Name: Physical Review (Section) A: General Physics; (USA) Vol. 40:11; ISSN PLRAA; ISSN 0556-2791
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
BEAMS
CHARGED PARTICLES
CONFIGURATION INTERACTION
ELECTRONIC STRUCTURE
ENERGY LEVELS
ERBIUM IONS
EXCITED STATES
HARTREE-FOCK METHOD
HYPERFINE STRUCTURE
ION BEAMS
IONS
LASER SPECTROSCOPY
METASTABLE STATES
SPECTROSCOPY