Spectroscopy of odd-mass cobalt isotopes toward the N = 40 subshell closure and shell-model description of spherical and deformed states

Recchia, FrancescoLenzi, Silvia M.Lunardi, SantoFarnea, EnricoGadea, AndrésMârginean, Nicolae MariusNapoli, Daniel RicardoAydın, Sezgin2019-07-122019-07-1220120556-2813https://dx.doi.org/ 10.1103/PhysRevC.85.064305https://hdl.handle.net/20.500.12451/2189Aydın, Sezgin (Aksaray, Yazar)The neutron-rich cobalt isotopes up to A=67 have been studied through multinucleon transfer reactions by bombarding a 238U target with a 460-MeV 70Zn beam. Unambiguous identification of prompt ? rays belonging to each nucleus has been achieved using coincidence relationships with the ions detected in a high-acceptance magnetic spectrometer. The new data are discussed in terms of the systematics of the cobalt isotopes and interpreted with large-scale shell-model calculations in the fpgd model space. In particular, very different shapes can be described in 67Co, at the edge of the island of inversion at N=40, where a low-lying highly deformed band coexists with a spherical structure.eninfo:eu-repo/semantics/openAccessSpectroscopy of odd-mass cobalt isotopes toward the N = 40 subshell closure and shell-model description of spherical and deformed statesArticle85610.1103/PhysRevC.85.064305N/AN/A