Hyperfine structure of high- L states in sup 143,145 Nd I by atomic-beam laser-rf double resonance

Journal Article · Mon Jul 01 04:00:00 EDT 1991 · Physical Review, A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.44.760· OSTI ID:5594959

Childs, W J ^[1]

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1. Argonne National Laboratory, Argonne, Illinois 60439 (USA)

The atomic-beam laser-rf double-resonance technique has been used to study the hyperfine structure (hfs) of the metastable {sup 7}{ital L}{sub 5--11} and {sup 7}{ital K}{sub 4} states of the 4{ital f}{sup 4}5{ital d}6{ital s} configuration in {sup 143,145}Nd I. Four zero-field intervals were measured in each state and the results used to assign the conventional hfs constants {ital A} and {ital B}. Comparison of the results with predictions of the Sandars-Beck model allowed evaluation of the relevant single-electron radial hfs integrals. These are compared with earlier results from the Nd I atomic ground term and with extrapolations from other rare-earth elements. The unusually large orbital-angular-momentum values ({ital L}=7 and 8 for the states studied) do not appear to have introduced any anomalous effects. {ital Ab} {ital initio} calculations are not yet feasible for the complex 4{ital f}{sup 4}5{ital d}6{ital s} levels studied.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5594959
• Journal Information: Physical Review, A; (United States), Journal Name: Physical Review, A; (United States) Vol. 44:1; ISSN 1050-2947; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ANGULAR MOMENTUM
DOUBLE RESONANCE METHODS
ELECTROMAGNETIC RADIATION
ELECTRONIC STRUCTURE
ELEMENTS
ENERGY LEVELS
EXCITED STATES
GROUND STATES
HYPERFINE STRUCTURE
L SHELL
LASER RADIATION
METALS
METASTABLE STATES
NEODYMIUM
OPTICAL PUMPING
ORBITAL ANGULAR MOMENTUM
PUMPING
RADIATIONS
RARE EARTHS
RF SYSTEMS