Physics of Fundamental Symmetries and Interactions - PSI2010 Development of NMOR magnetometer for spin-maser EDM experiment
Physics of Fundamental Symmetries and Interactions - PSI2010 Development of NMOR magnetometer for spin-maser EDM experiment
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发表时间：
2011
影响因子：
2.9
通讯作者：
A. Yoshimi;T. Nanao;T. Inoue;T. Furukawa;M. Uchida;M. Tsuchiya;H. Hayashi;M. Chikamori;K. Asahi
中科院分区：
文献类型：
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作者：
A. Yoshimi;T. Nanao;T. Inoue;T. Furukawa;M. Uchida;M. Tsuchiya;H. Hayashi;M. Chikamori;K. Asahi
摘要我们一直在研制一种用于原子电火花加工实验的高灵敏度原子磁强计，它使用的是低频核自旋激射器。在已研制的129Xe核自旋激射器中，磁fl场漂移和fi效应的抑制是一个重要的问题。正在研制的用于自旋脉泽电火花加工实验的磁强计利用了Rb原子蒸气中的非线性磁光旋转eff等。小磁化fi场中旋光的增强依赖于气室中Rb原子的长自旋相干时间。使用涂有抗松弛材料的RB细胞来测量NMOR光谱。研究了NMOR光谱与激光频率、细胞涂层和激光光束直径的关系。根据观测的NMOR谱和噪声谱，目前的磁敏感度为0.2NMOR G/μHZ。关键词：电偶极矩、核自旋脉泽、原子磁力计、非线性磁光旋转1。前言永久电偶极矩(EDM)的研究一直是寻找超越标准模型的物理的一个重要问题[1，2，3]。与自旋相关的不消失的电磁场构成了theviolationoftimereversalinvarianceandspacereflectioninvariance.的明显证据最近，非中性EDM实验[4]，butalsoatomicEDMexperimentshavebeenperformedorproposed[5，6].在实验中，EDM信号以频移Δν=4的形式出现
AbstractWe have been developing a high sensitivity atomic magnetometer for atomic EDM experiments using a low-frequency nuclear spin maser. In the developed nuclear spin maser of 129 Xe, suppression of drift and fluctuation in themagnetic field is one of the important issues. The magnetometer being developed for spin maser EDM experimentsutilizes the nonlinear magneto optical rotation (NMOR) effect in Rb atomic vapor. The enhancement of the opticalrotation in a small magnetic field relies on the long spin-coherence time of Rb atoms in a vapor cell. The NMORspectrum was measured by using fabricated Rb cells coated with an anti-relaxation material. The NMOR spectrumdependence on laser frequency, cell coating, and laser beam diameter were investigated. The magnetic sensitivity atpresent is 0.2 μG/√Hz from observed NMOR and noise spectra. Keywords: Electric dipole moment, nuclear spin maser, atomic magnetometer, Nonlinear magneto optical rotation1. IntroductionThe study of permanent electric dipole moment (EDM) has been an important issue in searching for physicsbeyond the standard model [1, 2, 3]. The non-vanishing EDM associated with spin constitutes clear evidence of theviolationoftimereversalinvarianceandspacereflectioninvariance. Recently,notonlyneutronEDMexperiments[4],butalsoatomicEDMexperimentshavebeenperformedorproposed[5,6]. Intheexperiments,theEDMsignaloccursas a frequency shift Δν=4