High-Resolution Study of theFe56(t, p)Fe58Reaction

The ${\mathrm{Fe}}^{56}(t, p){\mathrm{Fe}}^{58}$ reaction is studied with 12-MeV incident tritons and a multigap magnetic spectrograph. Angular distributions are obtained for more than 60 transitions, and from them, angular-momentum transfers and hence spins and parities of states in ${\mathrm{Fe}}^{58}$ are assigned. Results of the ${\mathrm{Fe}}^{57}(d, p){\mathrm{Fe}}^{58}$ reaction are used in conjunction with these measurements to assign three unnatural parity states. The collective $3^{-}$ state is at 3.88 MeV. The ${\mathrm{Fe}}^{54}$ and ${\mathrm{Fe}}^{56}(t, p)$ reactions are compared.