| 铷原子频标磁致频移相关问题研究 |
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| 引用本文： | 聂帅,王鹏飞,梅刚华,钟达. 铷原子频标磁致频移相关问题研究[J]. 波谱学杂志, 2017, 34(2): 200-205. DOI: 10.11938/cjmr20170209 |
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| 作者姓名： | 聂帅 王鹏飞 梅刚华 钟达 |
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| 作者单位： | 1. 中国科学院原子频标重点实验室(中国科学院 武汉物理与数学研究所), 湖北 武汉 430071;2. 中国科学院大学, 北京 100049 |
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| 基金项目： | 国家重大科技专项资助项目 |
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| 摘 要： | 长期稳定度是评价铷原子频标性能的一项关键指标．物理系统内部静磁场（C场）稳定性引起的磁致频移与铷频标长期稳定度有关．利用87Rb原子基态磁敏跃迁频率与轴向外加磁场的线性关系，测量了铷频标物理系统内部磁场强度，并计算了铷频标物理系统磁屏蔽筒轴向磁屏蔽因子约为3 828．实验结果表明磁屏蔽筒有效地降低了地磁场日波动对铷频标物理系统内部C场的影响，使磁致频移控制在合理范围内．
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| 关 键 词： | 磁屏蔽因子 能级跃迁 频率稳定度 铷原子频标 |
| 收稿时间： | 2016-04-05 |
Magnetic Frequency Shift in Rubidium Atomic Frequency Standards |
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| NIE Shuai,WANG Peng-fei,MEI Gang-hua,ZHONG Da. Magnetic Frequency Shift in Rubidium Atomic Frequency Standards[J]. Chinese Journal of Magnetic Resonance, 2017, 34(2): 200-205. DOI: 10.11938/cjmr20170209 |
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| Authors: | NIE Shuai WANG Peng-fei MEI Gang-hua ZHONG Da |
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| Affiliation: | 1. Key Laboratory of Atom Frequency Standard of the Chinese Academy of Sciences(Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences), Wuhan 430071, China;2. University of Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | Long-term stability is a key specification for rubidium atomic frequency standards (RAFS), which is influenced by magnetic frequency shift caused by C-field stability. Taking advantage of the linear relationship between the transition frequency of87Rb ground state and external magnetic field, we measured the C-field intensity inside the physical package of RAFS, as well as the magnetic shielding factor of the magnetic shield case. Experimental results indicated that C-field fluctuation inside the physical package could be attenuated by using the magnetic shield case. The axial magnetic shield factor was measured to be about 3828, which could shield geomagnetic field efficiently and keep the magnetic frequency shift in a proper range. |
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| Keywords: | rubidium atomic frequency standards (RAFS) magnetic shielding factor energy level transition frequency stability |
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