Phys.Rev. C 102, 064310 (2020)

C.Porzio, C.Michelagnoli, N.Cieplicka-Orynczak, M.Sferrazza, S.Leoni, B.Fornal, Y.Tsunoda, T.Otsuka, S.Bottoni, C.Costache, F.C.L.Crespi, L.W.Iskra, M.Jentschel, F.Kandzia, Y.-H.Kim, U.Koster, N.Marginean, C.Mihai, P.Mutti, A.Turturica

Detailed low-spin spectroscopy of ⁶⁵Ni via neutron capture reaction

NUCLEAR REACTIONS ⁶⁴Ni(n, γ), E=thermal; measured Eγ, Iγ, γγ-coin, γγ(θ) using FIPPS array of eight HPGe clovers at ILL, Grenoble. ⁶⁵Ni; deduced levels, J, π, multipolarities, mixing ratios; calculated potential-energy surfaces of ⁶⁵Ni in (Q₀, Q₂) plane for different excited states. Comparison with Monte Carlo shell-model (MCSM) calculations, predicting spherical shapes for most states, with the exception of first 9/2+ and second 1/2- states of oblate deformation.

doi: 10.1103/PhysRevC.102.064310