Angular distributions of the reaction ${\mathrm{Li}}^7({\mathrm{Li}}^6, d){\mathrm{B}}^{11}$ leading to the ground state and first three excited states of ${\mathrm{B}}^{11}$ and the reaction ${\mathrm{Li}}^6({\mathrm{Li}}^7, t){\mathrm{B}}^{10}$ leading to the ground state and first excited state of ${\mathrm{B}}^{10}$ have been studied at an incident energy of 2.1 Mev. The principal features of the observed distributions are their asymmetry about 90° and slow variation of cross section with angle. The results suggest that the reactions proceed at least in part by a stripping mechanism with the capture of the alpha-particle core of the lithium projectile. The importance of this mechanism to the experimental investigation of the cluster model is indicated.

• Received 25 July 1960

DOI:https://doi.org/10.1103/PhysRev.121.182