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Gamma-ray studies in 64 Zn: levels above 3.1 MeV

1980; IOP Publishing; Volume: 6; Issue: 1 Linguagem: Inglês

10.1088/0305-4616/6/1/015

2057-763X

D N Simister, L.P. Ekström, Graeme Jones, F Kearns, T P Morrison, O M Mustaffa, H.G. Price, P.J. Twin, R. Wadsworth, N J Ward,

X-ray Spectroscopy and Fluorescence Analysis

The 61Ni ( alpha ,n gamma ) 64Zn reaction has been studied 8.6 MeV and 9.35 MeV bombarding energies together with the 56Fe(11B, p2n gamma )64Zn reaction at 30 MeV bombarding energy. The gamma -ray decay scheme of 64Zn has been deduced up to 5.7 MeV excitation by means of gamma - gamma coincidence experiments and n- gamma coincidence experiments. Spins and parities have been deduced for most of the high-spin states between 3.1 and 5.7 MeV excitation by means of gamma -ray angular distribution measurements together with gamma -ray linear polarisation measurements. The lifetimes of levels have been measured by DSAM enabling electromagnetic transition rates to be determined for many transitions. The results have been compared with shell-model, cluster-vibration model and interacting boson approximation calculations.