Nuclear Spin and Magnetic Dipole Moment of 39-min Gold-190

Some of the nuclear properties of 39-min ${\mathrm{Au}}^{190}$ have been investigated with the atomic-beam magnetic-resonance method. We have obtained the result $I=1\mathrm{}$ for the nuclear spin and $\left|\Delta \nu \right|=3105\mathrm{}\pm 425$ Mc/sec for the hyperfine-structure separation. Substitution of this $\Delta \nu$ and the known values of $\Delta \nu$ and $\mu$ for ${\mathrm{Au}}^{197}$ into the Fermi-Segrè formula yields a calculated magnetic dipole moment of $\left|{\mu }_I\right|=0.065\mathrm{}$ nm.