Abstract
The hyperfine structures of the and states of and are investigated within the framework of the nonrelativistic quantum electrodynamics, including relativistic and radiative corrections up to order . The uncertainties of the calculated hyperfine splittings are on the order of tens of ppm, and for our results improve the previous theoretical and experimental values by at least two orders of magnitude. The improved sensitivity of the hyperfine splittings of to the nuclear Zemach radius and electric quadrupole moment opens the way to future measurements to extract the atomic physics values of these two nuclear properties to an accuracy of 5% or better.
- Received 22 November 2022
- Accepted 3 January 2023
DOI:https://doi.org/10.1103/PhysRevA.107.L010802
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