Development of NMOR magnetometer for spin-maser EDM experiment
Development of NMOR magnetometer for spin-maser EDM experiment
复制标题
用于自旋脉泽EDM实验的NMOR磁力计的开发
DOI：
10.1016/j.phpro.2011.06.043
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
et al.
中科院分区：
文献类型：
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作者：
A.Yoshimi;T.Furukawa;K.Asahi;et al.
我们一直在开发一种使用低频核自旋脉泽进行原子 EDM 实验的高灵敏度原子磁力计。在已研制的129Xe核自旋脉泽中，抑制磁场漂移和涨落是重要问题之一。为自旋微波激射器 EDM 实验开发的磁力计利用了铷原子蒸气中的非线性磁旋光 (NMOR) 效应。小磁场中旋光度的增强依赖于汽室中 Rb 原子的长自旋相干时间。 NMR 光谱是通过使用涂有抗弛豫材料的制造 Rb 电池来测量的。研究了 NMR 光谱对激光频率、细胞涂层和激光束直径的依赖性。从观测到的NMOR和噪声谱来看，目前的磁灵敏度为0：2μG/√Hz。
We have been developing a high sensitivity atomic magnetometer for atomic EDM experiments using a lowfrequency nuclear spin maser. In the developed nuclear spin maser of129Xe, suppression of drift and fluctuation in the magnetic field is one of the important issues. The magnetometer being developed for spin maser EDM experiments utilizes the nonlinear magneto optical rotation (NMOR) e_ect in Rb atomic vapor. The enhancement of the optical rotation in a small magnetic field relies on the long spin-coherence time of Rb atoms in a vapor cell. The NMOR spectrum was measured by using fabricated Rb cells coated with an anti-relaxation material. The NMOR spectrum dependence on laser frequency, cell coating, and laser beam diameter were investigated. The magnetic sensitivity at present is 0:2μG/√Hz from observed NMOR and noise spectra.