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arXiv · 2409.01476

An extrapolation method for polarizability assessments of ion-based optical clocks

K. J. Arnold·M. D. Barrett
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Abstract

We present a numerical method for extrapolating polarizability measurements to dc as done in the assessment of blackbody radiation shifts for ion-based clocks. The method explicitly accounts for the frequency dependence of relevant atomic transitions without introducing an ad hoc modelling function. It incorporates \emph{a priori} atomic structure calculations, which allows measurements to be augmented by calculations if there is insufficient data to make a purely measurement based estimate. The method also provides indicators of inconsistencies between theory and experiment or inadequacies of the data for making an extrapolation. We use results from Al$^+$, Lu$^+$, and Yb$^+$ to illustrate features of the method.

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K. J. Arnold, M. D. Barrett. 2024-09-02. An extrapolation method for polarizability assessments of ion-based optical clocks. https://arxiv.org/abs/2409.01476

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