弛豫与关联效应对NII离子2s22p3s3P1—2s22p21D2与2s22p3s1P1—2s22p23P0,1,2自旋禁戒跃迁概率的影响

用多组态Dirac-Fock方法，并系统考虑相对论效应、电子关联、弛豫效应等重要贡献，计算了NII离子2s22p3s 3P1—2s22p21D2和2s22p3s 1P1—2s22p23P0,1,2自旋禁戒跃迁概率和振子强度-通过比较计算证实：弛豫和关联效应对禁戒跃迁概率的影响非常大，考虑了这些效应后，计算结果有显著的改善-由跃迁概率和振子强度的计算值推断，2s22p3s 3P1—2s22p21D2的谱线强度应该比原有的理论预言值小- 关键词： 跃迁概率 多组态Dirac-Fock方法

Influence of relaxation and correlation effects on probabilities of the 2s22p3s 3P1-2s22p2 1D2 and 2s22p3s 1P1-2s22p2 3P0,1,2 intercombination transitions in NII

The transition probabilities for the intercombination lines of 2s22p3s 3P1—2s22p21D2 and 2s22p3s 1P1—2s22p23P0,1,2 in NII have been calculated by using a large-scale multi-configuration Dirac-Fock method- In the calculation the most important effects of relativity, correlation, and relaxation are considered- The strong influence of correlation and relaxation effects on the transition probabilities have been confirmed by a compared calculation- When taking into account these effects in calculations, a remarkable improvement is found- From the results, the intensity of the 2s22p3s 3P1—2s22p21D2 line is supposed to be smaller than the previous theoretical prediction-