High spin states in 71Ga

Excited states in the odd-A nucleus Ga-71 have been studied via the Zn-70(Li-7, alpha 2n)Ga-71 fusion-evaporation reaction with incident beam energies of 30 and 35 MeV. The level scheme is established up to spin I-pi = (29/2(+)) and an excitation energy similar to 6.6 MeV. A previously known sequence built on the 9/2(+) state is extended as a novel rotational band originating from the nu(g(9/2)(2)) alignment. Furthermore, a negative-parity sequence is also reported. The observed energy levels of Ga-71 have been interpreted in the framework of the nuclear shell model (SM).

Automated summary

Excited states in the odd-A nucleus Ga-71 were studied using the Zn-70(Li-7, alpha 2n)Ga-71 fusion-evaporation reaction with beam energies of 30 and 35 MeV. A level scheme was established up to spin I-pi = (29/2(+)) and an excitation energy of approximately 6.6 MeV, revealing a novel rotational band and negative-parity sequence. The observed energy levels of Ga-71 were interpreted within the framework of the nuclear shell model (SM).