Neutron Thresholds in theCo59(p, n)Ni59Reaction

Abstract

The ${\mathrm{Co}}^{59}(p, n){\mathrm{Ni}}^{59}$ reaction has been used to find energy levels in the residual ${\mathrm{Ni}}^{59}$ nucleus by a neutron-threshold technique. Thresholds were found at bombarding energies corresponding to excited states of 0.341, 0.439, 1.22, 1.343, 1.79, 1.964, 2.15, 2.545, 2.72, 3.054, and 3.19 Mev. On the basis of these levels in ${\mathrm{Ni}}^{59}$, some of the thermal-neutron-capture gamma rays from natural nickel reported by Kinsey and Bartholomew have been given new isotopic assignments.