Phys.Rev. C 83, 034316 (2011)

A.Chakraborty, J.N.Orce, S.F.Ashley, B.A.Brown, B.P.Crider, E.Elhami, M.T.McEllistrem, S.Mukhopadhyay, E.E.Peters, B.Singh, S.W.Yates

Status of vibrational structure in ⁶²Ni

NUCLEAR REACTIONS ⁶²Ni(n, n'γ), E=2.8-4.1 MeV; measured Eγ, Iγ, γ(θ), excitation functions, Doppler shift attenuations. ⁶²Ni; deduced levels, J, π, multipolarities, mixing ratios, level half-lives, B(E2), B(M1). Comparison of experimental reduced transition probabilities with the predictions of the quadrupole vibrator model and with large-scale shell-model calculations in the fp shell configuration space. No evidence for three-phonon states. Role of Z=28 proton core excitations. Systematics of energies and B(E2) values for of 2+ states in A=56-68 even-even Ni nuclei.

NUCLEAR STRUCTURE ⁶²Ni; calculated levels, J, π, B(E2), occupation numbers of the fp orbitals for the protons and neutrons in ⁶²Ni. Large-scale shell model calculations in the fp shell. Complete mapping of the E2 strength for all possible transitions between the low-spin states.

doi: 10.1103/PhysRevC.83.034316