The (18O, 20Ne) reaction on the even Ni isotopes and the mass of 62Fe☆

Abstract The ( 18 O, 20 Ne) reaction on the even Ni isotopes has been studied at 63.0 MeV with ΔE - E time-of-flight telescopes. From the measured ground-state Q -value for the 64 Ni( 18 O, 20 Ne) 62 Fe reaction, −1.97±0.20 MeV, a mass excess −58.87±0.20 MeV is obtained for the 62 Fe nucleus. This result is in good agreement with a recent measurement of the β-endpoint energy. Angular distributions for the transitions to the Fe ground states, leaving 20 Ne in its ground and 1.63 MeV 2 + excited state, yield relative spectroscopic strengths in fair agreement with DWBA calculations based on simple shell-model estimates.