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Theoretical study of the Rydberg series energy levels of ns2S1/2,np2P1/2,3/2, nd2D3/2,5/2 and nf2F5/2,7/2 for alkali-metal Li, Na, K, Rb, Cs and Fr

Li Xin-Mei Ruan Ya-Ping Zhong Zhi-Ping

Theoretical study of the Rydberg series energy levels of ns2S1/2,np2P1/2,3/2, nd2D3/2,5/2 and nf2F5/2,7/2 for alkali-metal Li, Na, K, Rb, Cs and Fr

Li Xin-Mei, Ruan Ya-Ping, Zhong Zhi-Ping
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  • Received Date:  17 January 2011
  • Accepted Date:  08 April 2011
  • Published Online:  05 January 2012

Theoretical study of the Rydberg series energy levels of ns2S1/2,np2P1/2,3/2, nd2D3/2,5/2 and nf2F5/2,7/2 for alkali-metal Li, Na, K, Rb, Cs and Fr

  • 1. Collage of Physical Sciences, Graduate University of Chinese Academy of Sciences, Beijing 100049, China
Fund Project:  Project supported by the National Natural Science Foundation of China (Grant No. 11074299 ).

Abstract: In the frame work of multi-channel quantum defect theory, the energy levels of Rydberg series of ss2S1/2, np2P1/2, np2P3/2, nd2D3/2, nd2D5/2, nf2F5/2 and nf2F7/2 of alkali-metal atom are calculated by the relativistic multi-channel theory, in five different approximations, i.e., frozen core approximation, with consideration of l=-1 dipole polarization effect, l=+1 dipole polarization effect, l = 1 dipole polarization effect, stretch effect, and both dipole polarization effects and stretch effect, respectively. The present calculations show that electron correlation effect plays an important role in the energy level of Rydberg series. In summary, dipole polarization effect is more important than the stretch effect, and the l = + 1 dipole polarization effect is more important than l = - 1 dipole polarization effect. However, stretch effect is more important for energy levels of both Rydberg series ns2S1/2,(nd2D3/2,nd2D5/2) of Na, and Rydberg series (np2P1/2,np2P3/2) of Li.

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