Hyperfine-structure measurements in the ground state of radioactive {sup 150}Eu{sup +} ions
- Institut fuer Physik, Universitaet Mainz, 55099 Mainz (Germany)
The hyperfine constants {ital A} and {ital B} for magnetic dipole and electric quadrupole interaction in the {sup 9}{ital S}{sub 4} ground state of unstable {sup 150}Eu{sup +} ions have been determined with high precision in an optical microwave double-resonance experiment. The ions were produced by nuclear reactions at the ISOLDE facility at CERN, collected on a foil, reevaporated, and stored in a Paul ion trap. Three of eight possible hyperfine transitions between different {ital F} sublevels have been observed with well resolved Zeeman substructure in a residual magnetic field. Analysis of the transition frequencies and extensive second-order hyperfine correction yield values of {ital A}=559 010 325(40) Hz, {ital B}={minus}926.2(3.0) kHz. A preliminary value for the nuclear quadrupole moment {ital Q} ({sup 150}Eu{sup +})=1.264(23) b has also been obtained.
- OSTI ID:
- 147818
- Journal Information:
- Physical Review A, Journal Name: Physical Review A Journal Issue: 6 Vol. 52; ISSN 1050-2947; ISSN PLRAAN
- Country of Publication:
- United States
- Language:
- English
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