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 C 14 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 N 14 (d, p)N 15 reaction are also observed in the C 14 (p, γ)N 15 reaction. The N 14 (n, p)C 14 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.