transitions identified in establish two excited states at 1154.2 and 1266.5 keV with dimensionless ratios of 0.27 ± 0.03 and 2.5 ± 0.3, respectively. This is the heaviest nucleus in which excited states have been observed. Using density-dependent pairing matrix elements and appropriate single-particle energies we have calculated the energies of seniority 0 excited states to be 1310 and 1620 keV and the energy of the lowest state as 1430 keV. These calculations suggest that the 1154.2 keV state is probably the lowest pair vibration and the 1266.5 keV state is possibly the lowest state.
RADIOACTIVITY [from (,)]; measured , , , . deduced levels, , multipolarity, , , Two excited states. Mass-separated .
- Received 6 November 1978
- Published in the issue dated March 1979
© 1979 The American Physical Society