Previously determined absolute cross sections for the ${}_{}{}^{61}{}_{}{}^{}\mathrm{Ni}({}_{}{}^{16}{}_{}{}^{}\mathrm{O},3n){}_{}{}^{74}{}_{}{}^{}\mathrm{Kr}$ reactions are found to be incorrect due to errors in the published level structure of ${}_{}{}^{74}{}_{}{}^{}\mathrm{Kr}$. New information on the $\beta$-decay of ${}_{}{}^{74}{}_{}{}^{}\mathrm{Kr}$ has permitted upper limits on the ${}_{}{}^{61}{}_{}{}^{}\mathrm{Ni}({}_{}{}^{16}{}_{}{}^{}\mathrm{O},3n){}_{}{}^{74}{}_{}{}^{}\mathrm{Kr}$ cross sections to be established. These are in agreement with cross sections calculated for statistical evaporation of particles from a compound nucleus.

NUCLEAR REACTIONS ${}_{}{}^{61}{}_{}{}^{}\mathrm{Ni}({}_{}{}^{16}{}_{}{}^{}\mathrm{O},3n){}_{}{}^{74}{}_{}{}^{}\mathrm{Kr}$, $E_{{16}_O}=38.5\mathrm{}-51.0$ MeV; measured $E_{\gamma }$, $I_{\gamma }$; deduced $\sigma \mathrm{}\left(E\right)\mathrm{}$.

• Received 9 February 1976

DOI:https://doi.org/10.1103/PhysRevC.13.2588