Abstract
The hyperfine structure of the level in 5.3-day and the level in 10-h have been measured by atomic-beam magnetic resonance. The spins of these isotopes have been verified to be and . The electronic factor for the level in is found to be . The hyperfine constants and inferred nuclear moments are, The nuclear moments of were calculated from the hyperfine constants and assumptions made concerning the electronic fields at the nucleus; these assumptions include a 2% correction for the breakdown of Russell-Saunders coupling, but do not include corrections for the Sternheimer effect. The stated errors include a 5% uncertainty for . The Fermi-Segrè formula and the direct measurement of the magnetic moment of were used to calculate the dipole moment of . The quadrupole moment of has not been corrected for the Sternheimer effect. The measurements indicate that may be described by the shell model, but that is deformed and must be interpreted by the collective model.
- Received 12 February 1965
DOI:https://doi.org/10.1103/PhysRev.138.B1356
©1965 American Physical Society