## Abstract

The experimental procedure used in studying the angular distribution of $\gamma $-radiation produced by the proton bombardment of some light nuclei is described. Results are given for the radiation following proton capture by the nuclei Li$^{7}$, Be$^{9}$, C$^{12}$, C$^{13}$ and for the radiation from the residual O$^{16\ast}$ nucleus produced in the reaction F$^{19}$ (p, $\alpha $) O$^{16\ast}$. Proton energies between 300 and 1000 keV were available. The distribution of the radiation from Li$^{7}$ was investigated over the whole range of energies; in the other cases the distribution was measured at energies corresponding to resonance maxima for the processes. The main results are: $ \matrix\format\l\kern.8em&\c\kern.8em&\c \\ & \text{proton energy} & \\ \quad \text{reaction} & (\text{keV}) & \text{angular distribution} \\ \text{Li}^{7}\,(p,\gamma)\ \text{Be}^{8} & 440 & 1+0\cdot 05\ \cos \,\theta \\ \text{Be}^{9}\,(p,\gamma)\ \text{B}^{10} & 960 & 1+0\cdot 09\ \sin ^{2}\,\theta \\ \text{C}^{12}\,(p,\gamma)\ \text{N}^{13} & 450 & \text{isotropic} \\ \text{C}^{13}\,(p,\gamma)\ \text{N}^{14} & 550 & \text{isotropic} \\ \text{F}^{19}\,(p,\alpha)\ \text{O}^{16\ast} & 330,\ 470\ \text{and}\ 670 & \text{isotropic} \\ & 590 & 1+0\cdot 2\ \cos ^{2}\,\theta \\ & 870 & 1+0\cdot 1\ \cos ^{2}\,\theta \endmatrix $