Hyperfine-Structure Measurements on Silver-105

The hyperfine-structure separation in the ${}_{}{}^2{}_{}{}^{}S_{\frac{1}{2}}^{}{}_{}{}^{}$ electronic ground state of ${\mathrm{Ag}}^{105}$ (40 day; $I=\frac{1}{2}$) has been measured by atomic-beam methods. The result is $\Delta \nu =1529.057\mathrm{}\left(20\right)\mathrm{}$ Mc/sec, assuming either a positive or a negative nuclear moment. Combining this measurement with the known constants of ${\mathrm{Ag}}^{107}$ gives a nuclear magnetic moment of magnitude ${\left|{\mu }_I\right|}_{\mathrm{uncorrected}}=0.1009\mathrm{}\left(10\right)\mathrm{}$ nuclear magneton.