Abstract
The yrast level schemes of three neutron deficient nuclei with mass have been studied with the reaction at 135 MeV, using the GASP -ray array, the ISIS silicon ball, and the n-ring neutron detector. Excited levels, including a spin-gap isomer, are reported for the first time in the heaviest nucleus experimentally investigated, In the yrast line above the ground state has been observed and connected to states above the known isomeric level showing for the first time that this is indeed a spin-gap isomer. In the 95.6-keV isomeric transition was confirmed, and its character was firmly established. The experimental observations are compared with current shell-model calculations.
- Received 7 January 2003
DOI:https://doi.org/10.1103/PhysRevC.67.061301
©2003 American Physical Society