The nuclear gyromagnetic ratio, spin parity, and lifetime of the ${}_{}{}^{206}{}_{}{}^{}\mathrm{Hg}$ 2.102-MeV level have been measured to be $g=1.09\mathrm{}\pm 0.01$, $J^{\pi }=5^{-}$, and ${\tau }_m=3.1\mathrm{}\pm 0.3$ μsec, respectively. The level was populated via the ${}_{}{}^{204}{}_{}{}^{}\mathrm{Hg}(t, p){}_{}{}^{206}{}_{}{}^{}\mathrm{Hg}$ reaction. The perturbed angular distribution technique was employed to measure $g$. Using known data, the spin gyromagnetic ratio for a proton in the $3s$ orbital has been deduced: $g_s(\pi ;3s)=3.6\mathrm{}\pm 0.3$. For the 1.068-MeV level, $J^{\pi }=2^{+}$.

NUCLEAR REACTIONS ${}_{}{}^{204}{}_{}{}^{}\mathrm{Hg}(t, p)$, $E_t=16\mathrm{}$ MeV. For ${}_{}{}^{206}{}_{}{}^{}\mathrm{Hg}$ ($E_x=2.102\mathrm{}$ MeV), measured ${\tau }_m=3.1\mathrm{}\pm 0.3$ μsec, $g=1.09\mathrm{}\pm 0.01$, and $J^{\pi }=5^{-}$. For $E_x=1.068\mathrm{}$ MeV, $J^{\pi }=2^{+}$. Deduce $g(\pi ;3s)=3.6\mathrm{}\pm 0.3$.

• Received 8 March 1982

DOI:https://doi.org/10.1103/PhysRevC.26.914