A magnetic-lens pair spectrometer with 2.5% resolution has been used to study radiations produced by the bombardment of ${\mathrm{N}}^{14}$ and ${\mathrm{C}}^{13}$ by deuterons from a Van de Graaff accelerator. Gamma rays from the bombardment of ${\mathrm{N}}^{14}$ with 4.5-Mev deuterons were observed with quantum energies of 8.321±0.020, 9.07±0.04, 10.03±0.04, and 10.81±0.04 Mev. The detection of radiation from the 10.81-Mev level of ${\mathrm{N}}^{15}$, in competition with proton emission, indicates a small proton width for this level and an argument is advanced for the assignment of spin and parity values of ${\frac{3}{2}}^{+}$ to this state. Gamma rays from the bombardment of ${\mathrm{C}}^{13}$ with 4.5-Mev deuterons were observed with energies of 4.897±0.025, 5.102±0.025, 5.669±0.025, 5.833±0.030 (not Doppler-corrected), 6.090±0.020, 6.419±0.030, 6.700±0.025, 7.012±0.025, and 7.323±0.025 Mev. Experiments were performed which indicate conclusively that the 4.46-Mev $\gamma$ ray from the bombardment of ${\mathrm{C}}^{13}$ by deuterons is from ${\mathrm{B}}^{11}$. All $\gamma$-ray energies listed have been corrected for Doppler shift except where indicated.

• Received 10 October 1957

DOI:https://doi.org/10.1103/PhysRev.109.917