The angular distributions of ${\mathrm{He}}^6$ produced in the reactions ${\mathrm{Li}}^7$(${\mathrm{Li}}^7$,${\mathrm{He}}^6$)${\mathrm{Be}}^8$, ${\mathrm{B}}^{10}$(${\mathrm{Li}}^7$,${\mathrm{He}}^6$)${\mathrm{C}}^{11}$, and ${\mathrm{B}}^{11}$(${\mathrm{Li}}^7$,${\mathrm{He}}^6$)${\mathrm{C}}^{12}$ were studied with lithium ions having energies of 3.0, 3.5, and 3.8 MeV. The yields were nearly isotropic in the center-of-mass system, except for that from ${\mathrm{B}}^{10}$, which was peaked in the forward direction. These reactions apparently proceed by a mechanism more complex than the transfer of a proton from one nucleus to another.

• Received 15 January 1968

DOI:https://doi.org/10.1103/PhysRev.169.767