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arXiv · 2012.01042

Study of the magnetic octupole moment of $^{173}$Yb using collinear laser spectroscopy

R. P. de Groote·S. Kujanpää·Á. Koszorús·J. G. Li·I. D. Moore
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Abstract

The hyperfine constants of the $^3$P$^{\circ}_2$ state in neutral Yb have been measured using three different dipole transitions. This state was recently shown to have a comparatively large hyperfine magnetic octupole splitting, and thus a puzzlingly large magnetic octupole moment. The measurement is performed using collinear laser spectroscopy on a fast atomic beam, which provides a straightforward route to probing long-lived metastable atomic states with high resolution. From the combined analysis of all three lines we find no significant evidence for a non-zero octupole moment in $^{173}$Yb.

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R. P. de Groote, S. Kujanpää, Á. Koszorús, J. G. Li, I. D. Moore. 2020-12-02. Study of the magnetic octupole moment of $^{173}$Yb using collinear laser spectroscopy. https://doi.org/10.1103/physreva.103.032826

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