Various sequential reactions resulting from ${\mathrm{Be}}^9({\mathrm{Li}}^6,\alpha )$ have been studied to look for levels in ${\mathrm{B}}^{11}$ having a (${\mathrm{Be}}^9+d$) structure. The studies included measurement of particle-$\gamma$ and particle-particle coincidences. No unusual levels were found.

• Received 25 March 1968

DOI:https://doi.org/10.1103/PhysRev.172.1065