Nuclear Spin and Moments of 14-hrGa72

The hyperfine structure of the 14-hr isotope ${\mathrm{Ga}}^{72}$ has been investigated by use of atomic-beam magnetic-resonance techniques. The nuclear spin is found to be 3, the magnetic dipole moment ${\mu }_I=-0.132196\mathrm{}\pm 0.000013$ nm (subject to correction for a possible hyperfine anomaly), and the electric quadrupole moment $Q=+0.718\mathrm{}\pm 0.007$ barn.