Abstract
The levels in have been studied following thermal-neutron capture in using Ge(Li), Si(Li), curved-crystal, and coincidence spectrometers. The neutron binding energy of was determined as 5161.1±1.0 keV. The data, when combined with the previous study, allow the assignment of the first 14 states up to 581.060 keV to the mixed configurations and . The energies of states in keV (spin parity) are: 0 (), 29.965 (), 34.656 (), 43.811 (), 48.865 (), 63.171 (), 103.803 (), 162.656 (), 272.311 (), 284.634 (), 318.214 (), 322.003 (), 467.505 (), 581.060 (). Comparisons of -ray branching ratios and () cross sections with the predictions of a quasiparticle model for odd-odd nuclei allow a relatively uncompromised solution for the state vectors for the first 14 states. The success of this model implies that there is little phonon or four-quasiparticle admixture through the level at 581.060 keV. A detailed experimental study of additional levels up to 1055 keV has been performed.
- Received 13 July 1970
DOI:https://doi.org/10.1103/PhysRevC.2.2323
©1970 American Physical Society