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)†
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
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.
Accepted manuscript online:
PACS:
32.80.-t
(Photoionization and excitation)
Fund: Project supported by the National
Natural Science Foundation of China (No 10404033).
Cite this article:
Quan Wei(全威), Liu Hong-Ping(刘红平), Shen Li(沈礼), and Zhan Ming-Sheng(詹明生) Experimental investigation of barium spectra in crossed electric and magnetic fields 2007 Chinese Physics 16 3642
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