中国物理B ›› 2007, Vol. 16 ›› Issue (12): 3642-3646.doi: 10.1088/1009-1963/16/12/015

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Experimental investigation of barium spectra in crossed electric and magnetic fields

刘红平1, 詹明生1, 全 威2, 沈 礼2   

  1. (1)State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics,Wuhan Institute of Physicsand Mathematics, Chinese Academy of Sciences, Wuhan 430071, China;Center for Cold Atom Physics, Chinese Academy of Sciences, Wuhan 430071, China; (2)State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics,Wuhan Institute of Physicsand Mathematics, Chinese Academy of Sciences, Wuhan 430071, China;Center for Cold Atom Physics, Chinese Academy of Sciences, Wuhan 430071, China;Graduate School of Chinese Academy of Sciences, Beijing 100080, China
  • 出版日期:2007-12-20 发布日期:2007-12-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (No 10404033).

Experimental investigation of barium spectra in crossed electric and magnetic fields

Quan Wei(全威)a)b)c), Liu Hong-Ping(刘红平)a)b)†, Shen Li(沈礼)a)b)c), and Zhan Ming-Sheng(詹明生)a)b)†   

  1. a State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics,Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, Chinab Center for Cold Atom Physics, Chinese Academy of Sciences, Wuhan 430071, China; c Graduate School of Chinese Academy of Sciences, Beijing 100080, China
  • Online:2007-12-20 Published:2007-12-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (No 10404033).

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摘要： This paper has studied the barium spectra in external magnetic and electric fields on the recently-built system based on a super-conducting solenoid with high stability of better than 1 Gauss. Firstly, we compared the spectra in a high pure magnetic field of $B=4.00000$\,T for different polarized laser, $\sigma^{+}$ and $\sigma^-$. We prove that after a proper shift, the $\sigma^+$ and $\sigma^-$ spectra are completely identical. We also investigated the dependence of the spectral feature in the high magnetic field on an additionally applied crossing electric field. Along with the increase of the electric field, there is an energy shift for every spectral line. Based on a transformative Hamiltonian, we explained this energy shift well.

关键词: crossed fields, Rydberg, barium

Abstract: This paper has studied the barium spectra in external magnetic and electric fields on the recently-built system based on a super-conducting solenoid with high stability of better than 1 Gauss. Firstly, we compared the spectra in a high pure magnetic field of $B=4.00000$ T for different polarized laser, $\sigma^{+}$ and $\sigma^-$. We prove that after a proper shift, the $\sigma^+$ and $\sigma^-$ spectra are completely identical. We also investigated the dependence of the spectral feature in the high magnetic field on an additionally applied crossing electric field. Along with the increase of the electric field, there is an energy shift for every spectral line. Based on a transformative Hamiltonian, we explained this energy shift well.

Key words: crossed fields, Rydberg, barium

中图分类号:  (Photoionization and excitation)

  • 32.80.-t