The Neutron Yield from theC13(p,n)N13Reaction

The neutron yield from ${\mathrm{C}}^{13}\mathrm{}(p,n)\mathrm{}{\mathrm{N}}^{13}$ has been studied up to a proton energy of $E_p=3.96\mathrm{}$ Mev. A resonance is found at $E_p=3.76\mathrm{}$ Mev which corresponds to an excited state in ${\mathrm{N}}^{14}$ at 11.07 Mev and coincides with a previously reported level deduced from the reactions of deuterons on ${\mathrm{C}}^{12}$. This finding furnishes evidence that the same state of a compound nucleus can be excited by two entirely different processes.