Probing nuclear structures in the vicinity of 78Ni with β- and βn-decay spectroscopy of 84Ga
- Kolos, K.
- Verney, D.
- Ibrahim, F.
- Le Blanc, F.
- Franchoo, S.
- Sieja, K.
- Nowacki, F.
- Bonnin, C.
- Cheikh Mhamed, M.
- V. Cuong, P.
- Didierjean, F.
- Duchêne, G.
- Essabaa, S.
- Germogli, G.
- H. Khiem, L.
- Lau, C.
- Matea, I.
- Niikura, M.
- Roussière, B.
- Stefan, I.
- Testov, D.
- Thomas, J.C.
DOIAbstract
The decay of 84Ga has been reinvestigated at the PARRNe online mass separator of the electron-driven installation ALTO at IPN Orsay. The nominal primary electron beam of 10 μA (50 MeV) on a 238UCx target in combination with resonant laser ionization were used for the first time at ALTO. Improved level schemes of the neutron-rich 83,84Ge (Z=32) isotopes were obtained. The experimental results are compared with the state-of-the-art shell model calculations and discussed in terms of collectivity development in the natural valence space outside the 78Ni core
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