Phys.Rev. C 100, 011301 (2019)

J.Dudouet, A.Lemasson, G.Maquart, F.Nowacki, D.Verney, M.Rejmund, G.Duchene, O.Stezowski, E.Clement, C.Michelagnoli, A.Korichi, C.Andreoiu, A.Astier, G.de Angelis, G.de France, C.Delafosse, I.Deloncle, F.Didierjean, Z.Dombradi, C.Ducoin, A.Gadea, A.Gottardo, D.Guinet, B.Jacquot, P.Jones, T.Konstantinopoulos, I.Kuti, F.Le Blanc, S.M.Lenzi, G.Li, R.Lozeva, B.Million, D.R.Napoli, A.Navin, R.M.Perez-Vidal, C.M.Petrache, D.Ralet, M.Ramdhane, N.Redon, C.Schmitt, D.Sohler

Excitations of the magic N=50 neutron-core revealed in ⁸¹Ga

NUCLEAR REACTIONS ⁹Be(²³⁸U, F)⁷²Ga/⁷³Ga/⁷⁴Ga/⁷⁵Ga/⁷⁶Ga/⁷⁷Ga/⁷⁸Ga/⁷⁹Ga/⁸⁰Ga/⁸¹Ga/⁸²Ga/⁸³Ga/⁸¹Ge/⁸¹As/⁸¹Se, E=6.2 MeV/nucleon; measured yields of fission fragments, Eγ, Iγ, (fragment)γ- and γγ-coin using the VAMOS++ spectrometer for fragment identification and AGATA array for γ detection at GANIL. ⁸¹Ga; deduced high-spin levels, J, π. Systematics of shell gap in N=50 isotones: ⁷⁸Ni, ⁷⁹Cu, ⁸⁰Zn, ⁸¹Ga, ⁸²Ge, ⁸³As, ⁸⁴Se. Comparison with state-of-the-art large-scale shell model (LSSM) calculations.

NUCLEAR STRUCTURE ⁷⁸Ni, ⁸¹Ga; calculated levels, J, π and decomposition of the wave functions for states in the two nuclide. Large-scale shell model (LSSM) calculations.

doi: 10.1103/PhysRevC.100.011301