Laser-rf double-resonance spectroscopy of {sup 177,179}Hf
- Cyclotron Laboratory, The Institute of Physical and Chemical Research (RIKEN), Wako, Saitama 351-01 (Japan)
- Tokyo University of Mercantile Marine, Koto, Tokyo 135 (Japan)
- Department of Physics, Toho University, Funabashi, Chiba 274 (Japan)
- Department of Physics, Saitama University, Urawa, Saitama 338 (Japan)
- Institute for Nuclear Study, University of Tokyo, Tanashi, Tokyo 188 (Japan)
The atomic-beam laser-rf double-resonance technique has been used to make precision measurements of the hyperfine structure (hfs) splittings in the 5{ital d}{sup 2}6{ital s}{sup 2} {sup 3}{ital F}{sub {ital J}} ({ital J}=2--4) states in {sup 177,179}Hf I. By making corrections to the second-order hfs effects, magnetic dipole ({ital A}), electric quadrupole ({ital B}), and magnetic octupole ({ital C}) hfs constants are obtained for the {sup 3}{ital F}{sub {ital J}} states in {sup 177,179}Hf: The constant {ital C} has a strong {ital J} dependence as well as does {ital A} and {ital B}; the isotopic ratio of the constant {ital A} between {sup 177}Hf and {sup 179}Hf has a significant {ital J} dependence, indicating {ital J}-dependent hyperfine anomalies, while that of the constant {ital C} is independent of {ital J} within experimental uncertainties, which is taken to be the ratio of the nuclear-ground-state magnetic octupole moments {Omega}, i.e., {Omega}({sup 177}Hf)/{Omega}({sup 179}Hf)={minus}0.41(9). It is also pointed out that there is a clear indication of nuclear-spin dependence of the isotopic ratios of {ital C}. The single-electron hfs parameters of the 5{ital d} electron for the 5{ital d}{sup 2}6{ital s}{sup 2} configuration in Hf I are obtained, and the Sternheimer shielding factor {ital R}{sub 5{ital d}}={minus}0.397(8) is derived.
- OSTI ID:
- 76488
- Journal Information:
- Physical Review A, Journal Name: Physical Review A Journal Issue: 1 Vol. 52; ISSN 1050-2947; ISSN PLRAAN
- Country of Publication:
- United States
- Language:
- English
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