Phys.Rev. C 91, 034310 (2015)

F.Flavigny, D.Pauwels, D.Radulov, I.J.Darby, H.De Witte, J.Diriken, D.V.Fedorov, V.N.Fedosseev, L.M.Fraile, M.Huyse, V.S.Ivanov, U.Koster, B.A.Marsh, T.Otsuka, L.Popescu, R.Raabe, M.D.Seliverstov, N.Shimizu, A.M.Sjodin, Y.Tsunoda, P.Van den Bergh, P.Van Duppen, J.Van de Walle, M.Venhart, W.B.Walters, K.Wimmer

Characterization of the low-lying 0⁺ AND 2⁺ states in ⁶⁸Ni via β decay of the low-spin ⁶⁸Co isomer

RADIOACTIVITY ⁶⁸Co(β^-), (β^-n)[from ⁶⁸Mn -> ⁶⁸Fe -> ⁶⁸Co decay chain, ⁶⁸Mn from ²³⁸U(p, F), E=1 GeV]; measured Eγ, Iγ, βγ-, γγ-coin, half-life of first excited 0+ state by βγ(t) using RILIS and Miniball array at ISOLDE-CERN facility. ⁶⁸Ni; deduced levels, J, π, β feedings, logft, E0 decays, delayed neutron emission probability P_n, B(E2), configuration. Comparison with previous results, and with Monte Carlo shell model (MCSM) calculations. ^67,68Fe, ⁶⁷Co, ⁶⁸Ga, ¹³⁶I(β^-); detected γ rays.

NUCLEAR STRUCTURE ⁶⁸Ni; calculated Potential energy surfaces in (Q₀, Q₂) plane for the ground state and first 2+ state. Large-scale Monte Carlo shell model calculations. Comparison with experimental data.

doi: 10.1103/PhysRevC.91.034310