Nuclear Spins ofCs125andCs136, Hyperfine-Structure Separation and Nuclear Magnetic Moment ofCs125,Cs127, andCs136

We have used the atomic-beam magnetic-resonance method to determine the ground-state nuclear spin, the electronic ${}_{}{}^2{}_{}{}^{}S_{\frac{1}{2}}^{}{}_{}{}^{}$ ground-state hyperfine-structure (hfs) separations $\Delta \nu$, and the nuclear magnetic moments of 45-min ${}_{}{}^{125}{}_{}{}^{}\mathrm{Cs}$ and 13-day ${}_{}{}^{136}{}_{}{}^{}\mathrm{Cs}$. A more accurate value of the hfs separation of 6.2-hr ${}_{}{}^{127}{}_{}{}^{}\mathrm{Cs}$ was obtained by combining resonances reported previously with those reported in this work. The collected results are: