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囚禁汞离子的光微波双共振实验是开展汞离子微波频标的实验基础.二级Zeeman效应是影响频率稳定度和磁场效应的重要因素之一.利用光学微波双共振方法测量了囚禁199Hg+离子基态Zeeman分裂.通过减小微波扫描的频率范围,得到钟跃迁频率和谱线线宽.采用磁屏蔽材料(坡莫合金)对离子阱囚禁区域的磁场进行屏蔽.使得囚禁汞离子的钟跃迁谱线的线宽减小到1.5 Hz.相对于无磁场屏蔽时,钟跃迁频率减小13.5 Hz,并利用二级Zeeman效应估算出磁屏蔽后离子囚禁区域磁场大小为0.1高斯.

参考文献

[1] Wang Y Q,Wang Q J,Fu J S.Quantum Frequency Standard Theory (量子频标原理)[M].Beijing:Science Press,1986:545-552 (in Chinese).
[2] Yang F J.Atomic Physics(原子物理学)[M].Beijing:Higher Education Press,2000:172-192 (in Chinese).
[3] Burt E,Prestage J D,et al.Probing magnetic field effects in 12-pole linear ion trap frequency standards[C].Proc.IEEE,International Frequency Control Symposium and PDA Exhibition,New Orleans,2002,463-468.
[4] She L,Wang W M,Bal L,et al.Fluorescence detection and buffer gas cooling of trapped mercury ions in Paul trap[J].Chin.Phys.Lett.(中国物理快报),2008,25(5):1653-1656 (in Chinese).
[5] Tjoelker R L,Prestage J D,Dick G J,et al.Long term stability of Hg+ trapped ion frequency standard[C].Proc.IEEE,the 47th Annual Syrup.on Frequency Control,Salt Lake City,1993,132-138.
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