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

Abstract

An extended investigation of the low-spin structure of the ${}^{65}$Ni nucleus was performed at the Institut Laue-Langevin, Grenoble, via the neutron capture reaction ${}^{64}$Ni(n,$\gamma$)${}^{65}$Ni, using the FIPPS HPGe array. The level scheme of ${}^{65}$Ni was significantly expanded, with 2 new levels and 87 newly found transitions. Angular correlation analyses were also performed, allowing us to assign spins and parities for a number of states, and to determine multipolarity mixing ratios for selected $\gamma$ transitions. The low-energy part of the experimental level scheme (up to about 1.4 MeV) was compared with Monte Carlo Shell Model calculations, which predict spherical shapes for all states, apart from the 9/2${}^{+}$ and the second excited 1/2${}^{-}$ states of oblate deformation.

References in corpus (5)

• Quantum Phase Transition in the Shape of Zr isotopes
• Novel shape evolution in exotic Ni isotopes and configuration-dependent shell structure
• Structure of 65,67Co studied through the beta decay of 65,67Fe and a deep-inelastic reaction
• Shape Coexistence at Zero Spin in 64Ni Driven by the Monopole Tensor Interaction
• ${\beta }^{-}$ decay study of the ${}^{66}$Mn - ${}^{66}$Fe - ${}^{66}$Co - ${}^{66}$Ni chain

Cited by in corpus (1)

• Low-spin particle/hole-core excitations in ${}^{41,47,49}$Ca isotopes studied by cold-neutron capture reactions