The Neutrons and Gamma-Rays from the Disintegration ofC12by Deuterons

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Abstract
The excitation curves for the production of gamma-rays and neutrons resulting from the bombardment of carbon by deuterons have been determined over the deuteron energies 0.7 to 1.9 Mev. A careful study of the very narrow gamma-ray resonance occurring at 1.435 Mev has shown that the half-width of the resonance is 5.5 kev and the cross section is 0.62 barn at resonance. Other gammaray resonances were observed at 0.91, 1.16, 1.30, and 1.73 Mev with cross sections, respectively, of 0.29, 0.34, 0.39, and 0.97 barn. No resonance for the production of neutrons has been observed at, or near, 1.435 Mev. Resonances for the production of neutrons were observed at energies of 0.91, 1.16, 1.30, 1.62, and 1.76 Mev with the total cross section at resonance, respectively, of 0.12, 0.14, 0.19, 0.19 and 0.22 barn. The angular distributions of the neutrons have been studied; the distributions are quite complex and vary radically with changes in the bombarding energy. At 1.26 Mev there are about five times as many neutrons at 160° as at 0° to the direction of the deuteron beam.