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- W4225535315 abstract "The hyperfine structures of the $2,^3!S_1$ and $2,^3!P_J$ states of the $^7$Be$^{2+}$ and $^9$Be$^{2+}$ ions are investigated within the framework of the nonrelativistic quantum electrodynamics (NRQED). The uncertainties of present hyperfine splitting results of $^9$Be$^{2+}$ are in the order of several tens of ppm, where two orders of magnitude improvement over the previous theory and experiment values has been achieved. The contribution of nuclear electric quadrupole moment to hyperfine splitting of $^7$Be$^{2+}$ has been studied. A scheme for determining the properties of Be nuclei in terms of Zemach radius or the electric quadrupole moment based on precise spectra is proposed, and it opens a new window for the study of Be nuclei." @default.
- W4225535315 created "2022-05-05" @default.
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- W4225535315 date "2022-03-10" @default.
- W4225535315 modified "2023-09-27" @default.
- W4225535315 title "Precision calculation of hyperfine structure of $^{7,9}$Be$^{2+}$ ions" @default.
- W4225535315 doi "https://doi.org/10.48550/arxiv.2203.05159" @default.
- W4225535315 hasPublicationYear "2022" @default.
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