The $\gamma$-ray yield from 2.00 to 4.1 MeV proton bombardment of ${}_{}{}^{10}{}_{}{}^{}\mathrm{B}$ has been investigated. A single resonance is observed at $E_p=3.03\mathrm{}$ MeV in the yield of 0.43 MeV $\gamma$ rays.

NUCLEAR REACTIONS ${}_{}{}^{10}{}_{}{}^{}\mathrm{B}$($p$,$\alpha \gamma$)${}_{}{}^7{}_{}{}^{}\mathrm{Be}$ and ${}_{}{}^{10}{}_{}{}^{}\mathrm{B}$($p$,$p^{\prime }\gamma$)${}_{}{}^{10}{}_{}{}^{}\mathrm{B}$, $E=2.0-4.1\mathrm{}$ MeV; measured $E_{\gamma }$, $I_{\gamma }$. ${}_{}{}^{11}{}_{}{}^{}\mathrm{C}$ deduced levels. Enriched target.

• Received 15 November 1978

DOI:https://doi.org/10.1103/PhysRevC.20.1583