2.102-MeV level inHg206and the spin gyromagnetic ratio of the3−sproton

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, $J^{\pi }=2^{+}$.