J4 ›› 2011, Vol. 28 ›› Issue (1): 19-24.

• 光谱 • 上一篇    下一篇

囚禁汞(199Hg+)离子Zeeman谱及磁场效应

黄雄1,2, 杨玉娜1,2, 柳浩1,2, 高克林1,佘磊1,李交美1   

  1. 1 中科院武汉物理与数学研究所波谱与原子分子物理国家重点实验室, 湖北 武汉 430071; 
    2 中国科学院研究生院,北京 100049
  • 收稿日期:2010-04-15 修回日期:2010-05-31 出版日期:2011-01-28 发布日期:2011-01-14
  • 通讯作者: 李交美 研究员,博士生导师,研究方向为高性能汞离子微波频标。 E-mail:jmlee@wipm.ac.cn
  • 作者简介:黄雄 (1985-), 研究生. E-mail:hxhuangxiong@163.com
  • 基金资助:

    国家863项目(2007AA12Z304), 国家自然科学基金(10904163)

Zeeman spectrum and magnetic effect of trapped 199Hg+ ions

HUANG Xiong1,2, YANG Yu-na1,2, LIU Hao1,2, Gao Ke-lin1, SHE Lei1, LI Jiao-mei1   

  1. 1 State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics ,Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences , Wuhan 430071 ,China; 
    2 Graduate School of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2010-04-15 Revised:2010-05-31 Published:2011-01-28 Online:2011-01-14

摘要:

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1.5Hz。相对于无磁场屏蔽时,钟跃迁频率减小13.5Hz,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。

关键词: 光谱学, 囚禁汞离子, 磁场效应, 线宽

Abstract:

The experiment of optical-microwave double-resonance in trapped mercury is the basis for the research of mercury ion microwave frequency standard. The second-order Zeeman effect is one of important factor affecting frequency stability and the magnetic field effect. The Zeeman spectrum of the ground state of  trapped 199Hg+ ion was measured by the method of optical-microwave double-resonance. We got the clock transition frequency and linewidth of the clock transition line by scanning the microwave frequency in a narrow region. The magnetic field in trapping area was shielded by the materials of permalloy. The linewidth of the clock transition line is decreased to about 1.5Hz. Comparing the clock transition frequency without magnetic shielding, the clock transition frequency of magnetic shielding decreases 13.5Hz. According to the second-order Zeeman effect, It's calculated that the magnetic field of trapped region is about 0.1 Guass.

Key words: spectroscopy, trapped Hg+ ions, magnetic effect, linewith

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