Phys.Rev. C 93, 014316 (2016)

R.Lozeva, H.Naidja, F.Nowacki, J.Dudek, A.Odahara, C.-B.Moon, S.Nishimura, P.Doornenbal, J.-M.Daugas, P.-A.Soderstrom, T.Sumikama, G.Lorusso, J.Wu, Z.Y.Xu, H.Baba, F.Browne, R.Daido, Y.Fang, T.Isobe, I.Kojouharov, N.Kurz, Z.Patel, S.Rice, H.Sakurai, H.Schaffner, L.Sinclair, H.Watanabe, A.Yagi, R.Yokoyama, T.Kubo, N.Inabe, H.Suzuki, N.Fukuda, D.Kameda, H.Takeda, D.S.Ahn, D.Murai, F.L.Bello Garrote, F.Didierjean, E.Ideguchi, T.Ishigaki, H.S.Jung, T.Komatsubara, Y.K.Kwon, P.Lee, C.S.Lee, S.Morimoto, M.Niikura, H.Nishibata, I.Nishizuka

New isomer found in ¹⁴⁰₅₁Sb₈₉: sphericity and shell evolution between N=82 and N=90

NUCLEAR REACTIONS ⁹Be(²³⁸U, F)^140Sb, E=345 MeV/nucleon]; measured Enullg, Inullg, delayed γγ-coin, isomer half-life using EURICA 4π array, BigRIPS and ZeroDegree spectrometers at RIBF-RIKEN. ¹⁴⁰Sb; deduced levels, J, π, multipolarity, configuration, B(M1), B(E2). ^136,140Sb; compared isomeric populations. Comparison with shell model and mean Field calculations with Woods-Saxon potential. Systematics of (6-) and (7-) states; deduced evidence for evolution of πg_7/2 and πd_5/2 orbitals in ^134,136,140Sb, and for νf_7/2 orbital evolution up to N=89. Possible spin traps.

doi: 10.1103/PhysRevC.93.014316