The nuclear gyromagnetic ratio of the 6728-keV $I^{\pi }=3^{-}$ level in ${}_{}{}^{14}{}_{}{}^{}\mathrm{C}$ has been determined by observation of the time-dependent intensity modulations caused by static, isotropic hyperfine fields occurring in hydrogen-like ${}_{}{}^{14}{}_{}{}^{}\mathrm{C}$ ions recoiling in vacuum. A value $\mathrm{}\left|g\right|=0.272\mathrm{}\pm 0.007$ is obtained.

[NUCLEAR REACTION ${}_{}{}^3{}_{}{}^{}\mathrm{H}({}_{}{}^{13}{}_{}{}^{}\mathrm{C},p)$, $E=21\mathrm{}$ MeV, measured $I_{\gamma }(\theta ,t)$, hyperfine frequency. Deduced $g$, 6.728 MeV, $3^{-}$ level.]

• Received 1 August 1973

DOI:https://doi.org/10.1103/PhysRevC.9.1748