Speaker
Zong-Chao Yan
Description
The hyperfine structures of the $2^3S_1$ and $2^3P_J$ states of $^7$Be$^{2+}$ and $^9$Be$^{2+}$ are investigated within the framework of the nonrelativistic quantum electrodynamics, including relativistic and radiative corrections up to order $m\alpha^6$. The uncertainties of the calculated hyperfine splittings are on the order of tens of ppm, and for $^9$Be$^{2+}$ our results improve the previous theoretical and experimental values by at least two orders of magnitude. The improved sensitivity of the hyperfine splittings of $^{7,9}$Be$^{2+}$ 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.
| Keyword-1 | hyperfine structure |
|---|---|
| Keyword-2 | relativistic and QED effect |
| Keyword-3 | nuclear properties |
Authors
Dr
Ai-Xi Chen
(Zhejiang Sci-Tech University)
Dr
Pei-Pei Zhang
(Wuhan Institute of Physics and Mathematics)
Dr
Ting-Yun Shi
(Wuhan Institute of Physics and Mathematics)
Zong-Chao Yan
Co-authors
Dr
G. W. F. Drake
(University of Windsor)
Dr
Xiao-Qiu Qi
(Zhejiang Sci-Tech University)
Dr
Zhen-Xiang Zhong
(Wuhan Institute of Physics and Mathematics)
