The ${\mathrm{Li}}^6$+${\mathrm{C}}^{12}$ reaction has been studied for bombarding energies in the range 4.5 to 5.5 MeV. Angular distributions and total cross sections have been obtained at 100-keV intervals using a $\frac{\mathrm{dE}}{\mathrm{dx}}-E$ system coupled to a computer. The reaction products which have been studied are proton groups from the ground and first four excited states of ${\mathrm{O}}^{17}$, deuterons from the ground and first four excited states of ${\mathrm{O}}^{16}$ (the 6.05-6.13-MeV doublet unresolved), and alpha particles from the ground and second excited states of ${\mathrm{N}}^{14}$. The angular distributions of certain of the particle groups show a rather strong energy dependence. The total cross sections, however, are smoothly increasing functions of energy. There is no strong ($2J+1$) dependency in total cross sections that would imply a statistical compound-nucleus decay. The relatively smooth variation of the angular distributions of deuterons from the excited states of ${\mathrm{O}}^{16}$ and alpha particles from the second excited state of ${\mathrm{N}}^{14}$ suggests that these proceed predominantly via a direct reaction. The ground-state groups would appear to have significant compound-nucleus contributions.

• Received 26 August 1965

DOI:https://doi.org/10.1103/PhysRev.141.1007