Several excited states in the nuclei ${}_{}{}^{46}{}_{}{}^{}\mathrm{Ti}$, ${}_{}{}^{48}{}_{}{}^{}\mathrm{Ti}$, and ${}_{}{}^{54}{}_{}{}^{}\mathrm{Fe}$ were studied by means of triple angular-correlation measurements. The excited states were produced by proton inelastic scattering, and $\gamma -\gamma$ angular correlations were measured on the cascade from the state being studied, through the first excited state. The 2.01-, 2.61-, and 2.96-MeV states in ${}_{}{}^{46}{}_{}{}^{}\mathrm{Ti}$ were studied at a proton bombarding energy of 5.00 MeV. The experimental results for the 2.01-MeV state were consistent with a previous $J=4\mathrm{}$ assignment. The results yielded a $J=0\mathrm{}$ assignment to the 2.61-MeV state. The results for the 2.96-MeV state indicate either $J=2\mathrm{}$ or $J=3\mathrm{}$, with $J=2\mathrm{}$ strongly favored. The mixing ratio for the transition from the 2.96-MeV state to the 0.89-MeV state is $\delta =(-1.07\mathrm{}\pm 0.15)$ for $J=2\mathrm{}$, or $\delta =(+0.26\mathrm{}\pm 0.05)$ for $J=3\mathrm{}$. The 3.00-MeV state in ${}_{}{}^{48}{}_{}{}^{}\mathrm{Ti}$ was studied at a bombarding energy of 4.75-MeV. The experimental results yielded a $J=0\mathrm{}$ assignment to the 3.00-MeV state. The 2.56-MeV state in ${}_{}{}^{54}{}_{}{}^{}\mathrm{Fe}$ was studied at a bombarding energy of 5.15 MeV. The results yielded a spin assignment of $J=0\mathrm{}$ to the 2.56-MeV state.

• Received 7 April 1967

DOI:https://doi.org/10.1103/PhysRev.160.894