The mean life of the 0.119-Mev state of ${\mathrm{N}}^{16}$ has been measured and is found to be 7.83(1±0.04)×${10}^{-5\mathrm{}}$ second. This state was produced by means of the ${\mathrm{N}}^{15}(d, p)N^{16}$ reaction with deuterons having a laboratory energy of 1.76 Mev. The experiment involved periodically directing the deuteron beam onto and then away from the target. The lifetime was determined by measuring the decay rate of the 0.119-Mev $\gamma$-ray activity during the periods when the beam was off the target.

• Received 1 December 1958

DOI:https://doi.org/10.1103/PhysRev.114.867