Gyromagnetic Ratio of an Excited State and Other Angular Correlation Measurements forPb204m

The spin assignment, 9-4-2-0, for the levels of the triple cascade of ${\mathrm{Pb}}^{204m}$ has been found consistent with angular correlation measurements provided the first and second gamma rays are multipole mixtures. The first gamma ray must be $E5\mathrm{}$ with a one percent mixture of $M6\mathrm{}$, and the second gamma ray must be $E2\mathrm{}$ with 0.5 percent $M3\mathrm{}$. The gyromagnetic ratio of the 2.6×${10}^{-7\mathrm{}}$ sec state was measured by angular correlation techniques, and the result, $g=+0.054\mathrm{}\pm 0.005$ nuclear units, was obtained. If one assumes the validity of the spin 4 assignment for this state, the magnetic moment is 0.22±0.02 nuclear magnetons.