YRAST EXCITATIONS IN A=126-131 TE NUCLEI FROM DEEP-INELASTIC TE-130-64 REACTIONS(NI)

Thick target yy coincidence measurements for the system (130)Tei + 275 MeV Ni-64 have been performed using the GASP Ge detector array at Leg naro. For the isotopic assignments of previously unknown gamma-ray cas cades, prompt gamma gamma coincidences observed between Te and Ni part ner products were of vital importance. The results yield much new info rmation about excited states of moderate spins in A = 126-131 telluriu m nuclei, especially about yrast excitations of the little studied odd -A isotopes Te-127, Te-129, and Te-131. Level systematics of tellurium nuclei are presented, and both single-particle and collective aspects of the level spectra are discussed. (C) 1998 Elsevier Science B.V.