In-beam gamma-ray spectroscopy of Cd-102

• Neutron deficient nuclei close to 100Sn have been studied using the NORDBALL Ge-detector array together with ancillary particle detectors. Evaporation residues from the compound nucleus 108Te were identified with charged particle and neutron detectors. In this paper a considerable extension of the level scheme of the nucleus 102Cd is presented. The strongest cascade of the new level scheme reveals an irregular sequence of dipole transitions above Iπ = 10+ extending up to spin 17. A strongly populated rather regular side band consisting of four quadrupole transitions ranging from spin 9 to spin 17 was also discovered. This band was tentatively assigned negative parity. Shell model calculations were performed and a very good agreement with the experimental results was found. The excited states could successfully be interpreted as neutron particle and proton hole excitations with respect to the doubly closed core 50100Sn50.

Nyckelord

nuclear reaction Ni-58(Cr-50;1 alpha 2p); E=261 MeV; measured gamma gamma coinc; gamma gamma(theta); Cd-102 deduced levels; shell model calculations; EXCITED-STATES; NEUTRON; SELECTION; ISOTOPES; NORDBALL; DECAY

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