Phys.Rev. C 92, 051305 (2015)

P.-A.Soderstrom, S.Nishimura, Z.Y.Xu, K.Sieja, V.Werner, P.Doornenbal, G.Lorusso, F.Browne, G.Gey, H.S.Jung, T.Sumikama, J.Taprogge, Zs.Vajta, H.Watanabe, J.Wu, H.Baba, Zs.Dombradi, S.Franchoo, T.Isobe, P.R.John, Y.-K.Kim, I.Kojouharov, N.Kurz, Y.K.Kwon, Z.Li, I.Matea, K.Matsui, G.Martinez-Pinedo, D.Mengoni, P.Morfouace, D.R.Napoli, M.Niikura, H.Nishibata, A.Odahara, K.Ogawa, N.Pietralla, E.Sahin, H.Sakurai, H.Schaffner, D.Sohler, I.G.Stefan, D.Suzuki, R.Taniuchi, A.Yagi, K.Yoshinaga

Two-hole structure outside ⁷⁸Ni: Existence of a μs isomer of ⁷⁶Co and β decay into ⁷⁶Ni

NUCLEAR REACTIONS ⁹Be(²³⁸U, F), E=345 MeV/nucleon; measured Eγ, Iγ, γγ-coin, βγ(t), half-lives of isomers using BigRIPS separator, WAS3ABi silicon detector stack and EURICA array at RIBF-RIKEN. ⁷⁶Co, ⁷⁶Ni; deduced levels, isomers, J, π, configuration, B(E1), B(E2). Comparison with shell-model calculation using LNPS interaction.

RADIOACTIVITY ⁷⁶Co(β^-)[16-ms and 21.7-ms activities from ⁹Be(²³⁸U, F), E=345 MeV/nucleon]; measured Eγ, Iγ, γγ-coin, βγ(t), half-lives of isomers using BigRIPS separator, WAS3ABi silicon detector stack and EURICA array at RIBF-RIKEN. ⁷⁶Ni; deduced levels, isomers, J, π, configuration. Comparison with shell-model calculation using LNPS interaction.

doi: 10.1103/PhysRevC.92.051305