Al27(n, α)Na24Reaction Induced by 14.8-Mev Neutrons

Samples of aluminum foil inserted between two C2 nuclear plates were bombarded with 14.8-Mev neutrons, and the angular and energy distributions of the alpha particles resulting from ${\mathrm{Al}}^{27}(n, \alpha ){\mathrm{Na}}^{24}$ reaction were measured. It was found that the angular distribution of all energy regions in the center-of-mass system is concave upward and approximately 90° symmetrical. Also the curve on a semilog plot of the relative level density calculated from the energy distribution of the alpha particles fits a straight line which would correspond exactly to Maxwellian distribution with a temperature of about 1.45 Mev. The results are compared with the predictions of the statistical theory.