gamma-ray spectroscopy in Te-111 - art. no. 034308

Excited states in Te-111 have been studied using the 4pn evaporation channe l from the Ni-58 + Ni-58 reaction at a beam energy of 250 MeV. A thin-targe t experiment was carried out using GAMMASPHERE coupled with the MICROBALL c harged-particle detector array and an array of neutron detectors. A complem entary thick-target experiment was performed with the Stony Brook six-Ge-de tector array in order to measure the lifetime of an 11/2(-) isomer observed in the GAMMASPHERE data. The structure of Te-111 at low spin is dominated by the yrast nu (h) over bar(11/2) band, although a band assigned to the nu (g(7/2)d(5/2)) configuration is also observed. Four collective bands have b een found at higher spins. Experimental results are compared to the odd-A T e systematics and to core-quasiparticle and total Routhian surface calculat ions.