Nuclear Spin and Magnetic Hyperfine Interaction of 12-DayGe71

Abstract

The hyperfine structure of the ${}_{}{}^3{}_{}{}^{}P$ atomic ground state of radioactive ${\mathrm{Ge}}^{71}$ has been examined by means of the atomic-beam magnetic-resonance technique. The nuclear spin and magnetic dipole moment are measured to be ½ and +0.65±0.20 nm, respectively. The magnetic hyperfine interaction constants $a\left({}_{}{}^3{}_{}{}^{}P_1^{}{}_{}{}^{}\right)$ and $a\left({}_{}{}^3{}_{}{}^{}P_2^{}{}_{}{}^{}\right)$ are found to be ±(87.005±0.003) and ±(357±6) Mc/sec, respectively. The electronic $g$ factor $g_J$ is determined to be 1.50093±0.00008 for the ${}_{}{}^3{}_{}{}^{}P_1^{}{}_{}{}^{}$ state and 1.4948±0.0007 for the ${}_{}{}^3{}_{}{}^{}P_2^{}{}_{}{}^{}$ state.