Calculation of the Rydberg energy levels for francium atom

Abstract

Based on the weakest bound electron potential model theory, the Rydberg energy levels and quantum defects of ns2S1/2(n=8- 50), nd 2 D3/2 (n=6 - 50), and nd2D5/2(n=6 - 50) spectrum series for francium atom are calculated. The calculated results are in excellent agreement with the 74 known experimentally measured levels (the absolute difference is less than 0.03cm-1) and 58 energy levels for highly excited states are predicted. Copyright © 2010 Huang Shizhong and Sun Qiufeng.