CAPTURE RADIATION AND NEUTRONS FROM THE BOMBARDMENT OF C14 WITH PROTONS

Abstract

The yield and angular distribution of ground state γ-rays and of neutrons resulting from the proton bombardment of C14 have been studied for proton energies from 0.2 to 2.5 Mev. Assignments of spin and parity are made to most of the resonances observed in this range. A single particle proton state which may have isotopic spin 3/2 has been observed. The interference of this state, which has spin 1/2+, with a neighboring state of the same spin and parity is observed in the total yield of the ground state γ-ray. Three states below the neutron threshold which have been observed previously in the N14(d, p)N15 reaction are also observed in the C14(p, γ)N15 reaction. The N14(n, p)C14 cross section at thermal energies can be accounted for by a resonance observed in this experiment, but another resonance below the neutron threshold must be assumed to account for the thermal (n, n) and (n, γ) cross sections.