Abstract
The -decay scheme of has been investigated by measuring the -particle, -ray, and conversion-electron spectra of mass-separated samples. The spectrum was measured with the Argonne double-focusing magnetic spectrometer and also with a semiconductor detector. 13 groups were observed with energies and intensities 7.305 (1.5%), 7.251 (0.93%), 7.184 (0.29%), 7.106 (∼0.05%), 6.928 (1.8%), 6.885 (1.7%), 6.833 (87.0%), 6.782 (4.8%), 6.762 (0.38%), 6.720 (0.44%), 6.681 (0.07%), 6.638 (0.56%), and 6.579 (0.26%). The rays associated with the decay of were identified in an coincidence experiment. The multipolarities of prominent transitions were deduced from an coincidence experiment. The half-life of was measured from the decay of rays and found to be 5.30 ± 0.08 h. The branching was determined from the measured (Es x rays)/ ratio and was found to be 1.9 ± 0.2%. From these experiments four rotational bands in were identified. The ground state and the levels at 383.2, 480.4, and 678.0 keV in were given Nilsson-state assignments of , , , and , respectively. On the basis of the favored transition the ground state of has been assigned to the single-particle state.
- Received 16 February 1973
DOI:https://doi.org/10.1103/PhysRevC.8.737
©1973 American Physical Society