An excitation curve for the 5-Mev neutrons resulting from ${\mathrm{C}}^{13}$ bombarded by deuterons has been obtained for neutrons emitted at 0°±28° to the direction of the deuteron beam. The curve covers deuteron energies from 200 kev to 2.1 Mev. Resonances in the yield were observed at deuteron energies of 0.6, 0.9, 1.55, and 1.80 Mev with half-widths of 0.1, 0.4, 0.1, and 0.5 Mev respectively. These correspond to excited states in the intermediate ${\mathrm{N}}^{15}$ nucleus of 16.7, 16.9, 17.47, and 17.69 Mev.

• Received 3 August 1950

DOI:https://doi.org/10.1103/PhysRev.80.850