Core Excitation in 98Cd

Using a 58Ni(46Ti, α2n) reaction, a total of 24 different residual nuclei were identified. Among them were 98Cd and 97Ag. The level scheme of 98Cd was extended to Jπ=(15+). An isomeric state at 6634 keV excitation energy was confirmed. This state decays by a 4207 keV transition feeding the known 8+ state. The level scheme of 97Ag was also extended to Jπ=(33/2+) and the half-lives of two isomeric states were measured. Experimental energies of the excited states were compared with the results of ab initio shell-model calculations based on a realistic two-nucleon interaction. The Gammasphere Ge array, coupled with the Microball and the Neutron Shell ancillary particle detectors, was used at the 88 inch cyclotron at Lawrence Berkeley National Laboratory, USA