Branching ratios have been obtained for the electromagnetic decays of the lowest ${\mathrm{O}}^{+}$ $T=2\mathrm{}$ states in ${}_{}{}^{20}{}_{}{}^{}\mathrm{F}$, ${}_{}{}^{28}{}_{}{}^{}\mathrm{Al}$, ${}_{}{}^{32}{}_{}{}^{}\mathrm{P}$, ${}_{}{}^{56}{}_{}{}^{}\mathrm{Co}$, and ${}_{}{}^{60}{}_{}{}^{}\mathrm{Cu}$. In all cases the (${}_{}{}^3{}_{}{}^{}\mathrm{He},p$) reaction was used to populate the levels. Comparisons are presented with theoretical predictions of the shell model and with analogous Gamow-Teller $\beta$ decays leading to the same final states.

NUCLEAR REACTIONS ${}_{}{}^{18}{}_{}{}^{}\mathrm{O}({}_{}{}^3{}_{}{}^{}\mathrm{He},p\gamma )$, ${}_{}{}^{26}{}_{}{}^{}\mathrm{Mg}({}_{}{}^3{}_{}{}^{}\mathrm{He},p\gamma )$, ${}_{}{}^{30}{}_{}{}^{}\mathrm{Si}({}_{}{}^3{}_{}{}^{}\mathrm{He},p\gamma )$, ${}_{}{}^{54}{}_{}{}^{}\mathrm{Fe}({}_{}{}^3{}_{}{}^{}\mathrm{He},p\gamma )$, ${}_{}{}^{58}{}_{}{}^{}\mathrm{Ni}({}_{}{}^3{}_{}{}^{}\mathrm{He},p\gamma )$ $E=11\mathrm{}-15$ MeV, measured $p-\gamma$ coincidences, ($E_p,E_{\gamma },{\theta }_p=0\mathrm{}°,{\theta }_{\gamma }$) deduced $\gamma$ branching ratios for $T=2\mathrm{}$ states.

• Received 7 March 1977

DOI:https://doi.org/10.1103/PhysRevC.16.928