Abstract
The atomic-beam laser-rf double-resonance technique has been used to make precision measurements of the hyperfine structure (hfs) splittings in the 56 (J=2–4) states in i. By making corrections to the second-order hfs effects, magnetic dipole (A), electric quadrupole (B), and magnetic octupole (C) hfs constants are obtained for the states in : The constant C has a strong J dependence as well as does A and B; the isotopic ratio of the constant A between and has a significant J dependence, indicating J-dependent hyperfine anomalies, while that of the constant C is independent of J within experimental uncertainties, which is taken to be the ratio of the nuclear-ground-state magnetic octupole moments Ω, i.e., ΩHf)/ΩHf)=-0.41(9). It is also pointed out that there is a clear indication of nuclear-spin dependence of the isotopic ratios of C. The single-electron hfs parameters of the 5d electron for the 56 configuration in Hf i are obtained, and the Sternheimer shielding factor =-0.397(8) is derived.
- Received 9 December 1994
DOI:https://doi.org/10.1103/PhysRevA.52.157
©1995 American Physical Society