## Abstract

Saturated absorption laser spectroscopy has been used to measure the ratios of Landé ${\mathrm{g}}_{\mathrm{J}}$ factors ${\mathrm{g}}_{\mathrm{J}}(2{\mathrm{p}}_{8})/{\mathrm{g}}_{\mathrm{J}}(1{\mathrm{s}}_{5})$, ${\mathrm{g}}_{\mathrm{J}}(2{\mathrm{p}}_{9})/{\mathrm{g}}_{\mathrm{J}}(1{\mathrm{s}}_{5})$, and ${\mathrm{g}}_{\mathrm{J}}(2{\mathrm{p}}_{10})/{\mathrm{g}}_{\mathrm{J}}(1{\mathrm{s}}_{5})$ in ${}^{20}\mathrm{Ne}$. Then, by invoking an existing 5 ppm experimental value for ${\mathrm{g}}_{\mathrm{J}}(1{\mathrm{s}}_{5})$, we arrive at experimental values ${\mathrm{g}}_{\mathrm{J}}(2{\mathrm{p}}_{8})=1.1364(4)$, ${\mathrm{g}}_{\mathrm{J}}(2{\mathrm{p}}_{9})=1.3332(4)$, and ${\mathrm{g}}_{\mathrm{J}}(2{\mathrm{p}}_{10})=1.9909(2)$, whose 350, 300, and 100 ppm uncertainties represent two-, five-, and three-fold improvements over previous measurements.

© 2018 Optical Society of America

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