Nuclear Spin of Gallium-70

The atomic-beam magnetic-resonance method has been used to determine the nuclear angular momentum of 21-minute ${\mathrm{Ga}}^{70}$. Measurements performed in both the ${}_{}{}^2{}_{}{}^{}P_{\frac{1}{2}}^{}{}_{}{}^{}$ and the ${}_{}{}^2{}_{}{}^{}P_{\frac{3}{2}}^{}{}_{}{}^{}$ electronic states show that the nuclear spin is $I=1\mathrm{}$.