Thirteen levels below 3.8-MeV excitation in ${}_{}{}^{60}{}_{}{}^{}\mathrm{Fe}$ have been identified using the ${}_{}{}^{58}{}_{}{}^{}\mathrm{Fe}(t, p){}_{}{}^{60}{}_{}{}^{}\mathrm{Fe}$ reaction. Analysis of the proton angular distributions has yielded spins and parities of most states observed below 3.1 MeV. The ground-state $Q$ value is 6913 ± keV, yielding a mass excess for ${}_{}{}^{60}{}_{}{}^{}\mathrm{Fe}$ of -61404±5 keV. The level structure of ${}_{}{}^{60}{}_{}{}^{}\mathrm{Fe}$ deduced from this experiment is compared with previous measurements and is discussed in terms of a vibrational model.

NUCLEAR REACTIONS ${}_{}{}^{58}{}_{}{}^{}\mathrm{Fe}(t, p){}_{}{}^{60}{}_{}{}^{}\mathrm{Fe}$, $E_t=17.0\mathrm{}$ MeV, Q3D spectrograph; enriched targets, measured excitation energies, $\frac{d\sigma }{d\Omega }(\theta , E_p)$, DWBA analysis. ${}_{}{}^{60}{}_{}{}^{}\mathrm{Fe}$ levels deduced $L$,$J$,$\pi$.

• Received 23 January 1978

DOI:https://doi.org/10.1103/PhysRevC.18.102