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arXiv · 1901.04164

Spectroscopy of the $^1S_0$-to-$^1D_2$ clock transition in $^{176}$Lu$^+$

R. Kaewuam·T. R. Tan·K. J. Arnold·M. D. Barrett
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Abstract

High precision spectroscopy of the $^1S_0$-to-${^1}D_2$ clock transition of $^{176}$Lu is reported. Measurements are performed with Hertz level precision with the accuracy of the hyperfine-averaged frequency limited by the calibration of an active hydrogen maser to the SI definition of the second via a GPS link. The measurements also provide accurate determination of the $^1D_2$ hyperfine structure. Hyperfine structure constants associated with the magnetic octupole and electric hexadecapole moments of the nucleus are considered, which includes a derivation of correction terms from third-order perturbation theory.

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R. Kaewuam, T. R. Tan, K. J. Arnold, M. D. Barrett. 2019-01-14. Spectroscopy of the $^1S_0$-to-$^1D_2$ clock transition in $^{176}$Lu$^+$. https://doi.org/10.1103/physreva.99.022514

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