论文标题
超精细分组和Landé$ g_j $ $ 5S〜^2s_ {1/2} $和$ 5P〜^2p_ {1/2,3/2} $ ate $^{111,113} $ CD $ CD $ CD $ cd+$的确定。
Determination of hyperfine splittings and Landé $g_J$ factors of $5s~^2S_{1/2}$ and $5p~^2P_{1/2,3/2}$ states of $^{111,113}$Cd$^+$ for a microwave frequency standard
论文作者
论文摘要
关于被困的离子微波频率标准，我们报告了$^{111,113} $ CD $ CD $^+$的Hyperfine分裂和Landé$ G_J $因子的确定。 $ 5p〜^2p_ {3/2} $ of $^{111,113} $ CD $^+$ ions的$ 5P〜^2p_ {3/2} $状态的超精细分割使用激光诱导的荧光光谱测量。 CD $^+$离子被限制在线性保罗陷阱中，并通过ca $^+$ ions同情冷却。此外，超精细分割和landé$ g_j $ $ 5S〜^2s_ {1/2} $和$ 5p〜^2p_ {1/2,3/2} $级别的$^{111,113} $ cd $ cd $ cd $ cd $ cd $ cd $ cd $ cd $ cd $ cd $ cd $ cd $ cd $ cd $ cd $ cd $ cd $ cd $ cd $ cd $ cd $ cd $ cd $ cd $ cd $ g_j $ g_j $ g_j $ g_j $ g_j $。进行了测量的超精细分组和dirac-hartree-fock计算值，从而进一步保证了我们结果的可靠性。这项工作中提供的结果可以提高时钟过渡的信噪比以及二阶Zeeman换档校正的准确性，以及随后基于被困的CD $^+$离子的微波频率标准的稳定性和准确性。
Regarding trapped-ion microwave-frequency standards, we report on the determination of hyperfine splittings and Landé $g_J$ factors of $^{111,113}$Cd$^+$. The hyperfine splittings of the $5p~^2P_{3/2}$ state of $^{111,113}$Cd$^+$ ions were measured using laser-induced fluorescence spectroscopy. The Cd$^+$ ions were confined in a linear Paul trap and sympathetically cooled by Ca$^+$ ions. Furthermore, the hyperfine splittings and Landé $g_J$ factors of the $5s~^2S_{1/2}$ and $5p~^2P_{1/2,3/2}$ levels of $^{111,113}$Cd$^+$ were calculated with greater accuracy using the multiconfiguration Dirac--Hartree--Fock scheme. The measured hyperfine splittings and the Dirac--Hartree--Fock calculation values were cross-checked, thereby further guaranteeing the reliability of our results. The results provided in this work can improve the signal-to-noise ratio of the clock transition and the accuracy of the second-order Zeeman shift correction, and subsequently the stability and accuracy of the microwave frequency standard based on trapped Cd$^+$ ions.
