论文标题
分子偶极矩和超金和$λ$ - $ -DOBLET分裂的测量$ B^3π_1$
Measurement of the molecular dipole moment and the hyperfine and $Λ$-doublet splittings of the $B^3Π_1$ state of thallium fluoride
论文作者
论文摘要
我们报告了氟化thallium $ \ tilde {j} = 1 $ b^3π_1$（$ν= 0 $）状态的高精度测量值。该状态具有特殊的兴趣，因为它对于一种光学自行车方案至关重要，该方案旨在提高目前正在建设的Centrex核schiff-moment实验的灵敏度方面发挥重要作用。测量是通过监测低潮分子束的窄带激光激发诱导的荧光来进行的。我们使用激光束的多通排列来增强荧光。当使用摄像头观察时，我们可以从相邻的通行证中解析从相对方向接近分子的图像。这些图像产生了一种敏感的视觉方法来识别过渡的中心频率。将这些线中心的确定与来自声学调节器的频率校准耦合，可以更精确地确定$ \ tilde {j} = 1 $ sprical级分割的歧视。我们观察到$ \ tilde {j} = 1 $级别的急剧变化，并推断出$ f_1'= 1/2 $和$ f_1'= 1/2 $和$ f_1'= 1/2 $和$ f_1'= 3/2 $ 14.4（9）MHz和17.4（11.4（11.4（11）MHZ）的永久性电偶极矩和$λ$ -DOUBLET分组。
We report high-precision measurements on the thallium fluoride $\tilde{J} = 1$ hyperfine manifold of the $B^3Π_1$ ($ν= 0$) state. This state is of special interest because it is central to an optical cycling scheme that is envisioned to play an important role in enhancing the sensitivity of the CeNTREX nuclear Schiff-moment experiment presently under construction. The measurements are made by monitoring the fluorescence induced by narrow-band laser excitation of a cryogenic molecular beam. We use a multipass arrangement of the laser beam to enhance fluorescence. When viewed with a camera, we can spatially resolve images from adjacent passes that approach the molecules from opposing directions. These images yield a sensitive visual method to identify the central frequency of a transition. Coupling these line-center determinations with frequency calibration from an acousto-optic modulator has allowed a more precise determination of the $\tilde{J} = 1$ manifold of hyperfine level splittings. We observe Stark shifts of the $\tilde{J} = 1$ levels and infer a permanent electric dipole moment of 2.28(7) D and $Λ$-doublet splittings for the $F_1' = 1/2$ and $F_1' = 3/2$ manifolds of 14.4(9) MHz and 17.4(11) MHz, respectively.
