In atomic gyroscopes, measuring the effective noble-gas magnetic field enables the determination of the noble-gas polarization. The enhancement factor is introduced to relate the effective magnetic field and the polarization in a certain magnetic-field environment. Earlier experiments concentrate on the strong magnetic-field environment for measuring the spin-exchange cross section precisely, so the results on the enhancement factor in the weak magnetic field are still insufficient. In our nuclear magnetic resonance gyroscope based on Cs-${}^{129}\mathrm{Xe}$ and -${}^{131}\mathrm{Xe}$, the magnetic field is usually set to 1–10 $\mu \mathrm{T}$. In this paper, we measure the effective magnetic field and the polarization of Xe atoms to estimate the Cs-Xe enhancement factor in the weak magnetic field of 2.5 $\mu \mathrm{T}$ and give the estimation of the Cs-${}^{129}\mathrm{Xe}$ enhancement factor of $(1.60\pm 0.06)\times {10}^4$.

中文翻译：

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测量核磁共振陀螺仪中超极化Xe的增强因子

在原子陀螺仪中，测量有效稀有气体磁场可以确定稀有气体的极化。引入增强因子以将有效磁场与特定磁场环境中的极化相关联。较早的实验集中在强磁场环境下，以精确测量自旋交换截面，因此，在弱磁场中增强因子的结果仍然不足。在我们基于Cs-的核磁共振陀螺仪中${}^{129}e$ 和 -${}^{131}e$，磁场通常设置为1–10 $\mu \mathrm{Ť}$。在本文中，我们测量了有效磁场和Xe原子的极化，以估算2.5的弱磁场中的Cs-Xe增强因子。$\mu \mathrm{Ť}$ 并给出Cs的估计${}^{129}e$ 增强因子 $（1.60\pm 0.06）\times {10}^4$。