Study of the N = 50 major shell effect close to 78Ni : First evidence of a weak coupling structure in 8332Ge51and three-proton configuration states in 8131Ga50
/ Authors
D. Verney, F. Ibrahim, O. Perru, O. Bajeat, C. Bourgeois, M. Ducourtieux, C. Donzaud, S. Essabaa, S. Gales, L. Gaudefroy
and 10 more authors
D. Guillemaud-Mueller, F. Hammache, C. Lau, H. Lefort, F. Blanc, A. Mueller, F. Pougheon, B. Roussière, J. Sauvage, O. Sorlin
/ Abstract
New levels were attributed to 8131Ga50 and 8332Ge51 which were fed by the β-decay of their respective mother nuclei 8130Zn51 and 8331Ga52 produced by fission at the "PARRNe" ISOL set-up installed at the Tandem accelerator of the Institut de Physique NucléLeaire, Orsay. We show that the low energy structure of 8131Ga50 and 8332Ge51 can easily be explained within the natural hypothesis of a strong energy gap at N = 50 and a doubly-magic character for 78Ni.
Journal: Journal of Physics: Conference Series