The angular distributions of the 9.17-Mev ground state gamma ray and the gamma rays of the 2.73-6.44 Mev cascade resulting from the 1.75-Mev proton resonance on ${\mathrm{C}}^{13}$ (${\mathrm{N}}^{14*}$=9.17 Mev) have been measured. The spins deduced from the angular distributions for the 9.17-Mev state and the 6.44-Mev state agree with previous assignments. The angular momenta admixtures required are found to be in disagreement with one shell model of ${\mathrm{N}}^{14}$ but it is shown that the model can be brought into accord with experiment by having the 9.17-Mev state wave function include a configuration with a nucleon in the $f$ shell.

• Received 27 February 1961

DOI:https://doi.org/10.1103/PhysRev.123.194