An extrapolation method for polarisability assessments of ion-based optical clocks
We present a numerical method for extrapolating polarisability measurements to dc as sometimes done in the assessment of blackbody radiation shifts for ion-based optical clocks. The method explicitly accounts for the frequency dependence of relevant atomic transitions without introducing an ad hoc m...
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Main Authors: | , |
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Format: | Article |
Language: | English |
Published: |
IOP Publishing
2025-01-01
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Series: | New Journal of Physics |
Subjects: | |
Online Access: | https://doi.org/10.1088/1367-2630/ada4d1 |
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Summary: | We present a numerical method for extrapolating polarisability measurements to dc as sometimes done in the assessment of blackbody radiation shifts for ion-based optical clocks. The method explicitly accounts for the frequency dependence of relevant atomic transitions without introducing an ad hoc modelling function. It incorporates 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 apply the method to Al ^+ , Lu ^+ , and Yb ^+ for the purposes of illustration. |
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ISSN: | 1367-2630 |