论文标题
$^{7,9} $ be $^{2+} $ ions的超细结构的精确计算
Precision calculation of hyperfine structure of $^{7,9}$Be$^{2+}$ ions
论文作者
论文摘要
$ 2 \，^3 \！s_1 $和$ 2 \，^3 \！p_j $的$^7 $ be be $^{2+} $和$^9 $ be $^{2+} $ ions的超精细结构在非质量量子量子电差异（Nrqed）的框架内进行了研究。 $^9 $ be $^{2+} $的当前超精细分裂结果的不确定性是在几十ppm的顺序上，在这里，已经实现了两个数量级的改善，并且已经实现了实验值。已经研究了核电动四极力矩对$^7 $ be $^{2+} $的超精细分裂的贡献。提出了一种基于Zemach半径或基于精确光谱的电动四极力矩来确定BE核的特性的方案，并为研究Be核的研究打开了一个新的窗口。
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.
