Spin ofN16

Observations have been made on the intensity ratio of the 6.13- to 7.11-Mev gamma rays of ${\mathrm{O}}^{16}$ following decay of ${\mathrm{N}}^{16}$ in order to test the possibility that the ground and first excited states of ${\mathrm{N}}^{16}$ have spin 0- and 3- as preliminary results of recent calculations by Elliott have predicted. The ratio was obtained with ${\mathrm{N}}^{16}$ made by the ${\mathrm{O}}^{16}(n, p){\mathrm{N}}^{16}$ reaction and by the ${\mathrm{F}}^{19}(n, \alpha ){\mathrm{N}}^{16}$ reaction. For the first reaction, the ratio was obtained for two ages of the ${\mathrm{N}}^{16}$. The constancy of the resulting intensity ratios implies that the theoretical prediction is not correct.