High spin states in 67Ga

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Abstract

The nucleus 67Ga has been studied through the reaction 57Fe(12C, pnγ)67Ga at E12c = 40 MeV. New levels above 4 MeV excitation energy have been found and nuclear properties of these states are proposed from investigations of prompt γ-rays using in-beam γ-spectroscopic techniques. Comparison between the ground state sequence in 66Zn and the favoured states of positive parity up to Jπ = 252+ in 67Ga suggests that the latter can be explained in terms of coupling a g92 proton to the 66Zn core. A second collective band of positive parity is proposed to be based on a configuration [(f52)J≠O2πg92]152+. Results on magnetic substate populations of nuclear states formed in different heavy-ion induced reactions compiled. The α2, α4 combinations are consistent with the assumption of Gaussian distributed substate populations within the experimental errors.

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    Work supported in part by the Bundesministerium für Forschung und Technologie.

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