ThF $^+$的eEDM-sensitive态的光谱研究
Spectroscopy on the eEDM-sensitive states of ThF$^+$
摘要：
用于测量电子电偶极矩（eEDM）的优秀候选分子是一氟化钍（ThF $^+$），因为eEDM敏感态$^3Δ_1$是电子基态，因此不受自发衰变的退相干的影响。我们进行光谱学上的$X\,^3Δ_1$提取三个光谱常数至关重要的eEDM实验：超精细耦合常数，分子框架电偶极矩，和磁性$g$ -因素。为了理解黑体辐射对振动基态的影响，我们研究了$X\,^3Δ_1$的第一激发振动流形的寿命。我们进行从头计算，比较他们对我们的结果，并讨论了在JILA的一个新的eEDM实验中使用ThF $^+$的前景。
英文摘要：
An excellent candidate molecule for the measurement of the electron's electric dipole moment (eEDM) is thorium monofluoride (ThF$^+$) because the eEDM-sensitive state, $^3Δ_1$, is the electronic ground state, and thus is immune to decoherence from spontaneous decay. We perform spectroscopy on $X\,^3Δ_1$ to extract three spectroscopic constants crucial to the eEDM experiment: the hyperfine coupling constant, the molecular frame electric dipole moment, and the magnetic $g$-factor. To understand the impact of thermal blackbody radiation on the vibrational ground state, we study the lifetime of the first excited vibrational manifold of $X\,^3Δ_1$. We perform ab initio calculations, compare them to our results, and discuss prospects for using ThF$^+$ in a new eEDM experiment at JILA.
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