Effect of Nuclear Mass on the Bound-ElectrongFactor

Abstract

The effect of nuclear mass on the $g$ factor of the bound electron has been determined by measuring $G=\frac{g_j\left(\mathrm{H}\right)}{g_j\left(\mathrm{D}\right)}$ to a precision of 3 × ${10}^{-11\mathrm{}}$ using a pulsed double-mode hydrogen maser. The result, $G=1+(7.22\mathrm{}\pm 0.03)\times {10}^{-9\mathrm{}}$, is in excellent agreement with the theory of Grotch and Hegstrom.