与闪电过程有关的NII离子能级寿命的理论计算

Theoretical calculation for the lifetimes of NⅡ related to lightning process

用相对论多组态Dirac Fock方法 ,系统地计算了与闪电过程有关的NII离子 2p2 ,2s2p3 ,2p3s,2p3p ,2p3d组态能级之间的辐射跃迁概率 ,并由此推算出这些组态的 35个能级的寿命 .计算中考虑了相对论效应、电子关联、延迟效应等重要贡献 .与已有的理论计算比较 ,目前计算的结果更接近最新实验值 .据此 ,进一步给出了 2p3d3

Transition probabilities have been calculated for transitions between the levels of 2p 2,2s2p 3,2p3s,2p3p and 2p3d configurations of NII.Large scale multiconfiguration Dirac Fock wave functions are applied to include the most important effects of relativity,correlation,and rearrangement of the electron density within the same (computational)model.From the transition probability lifetimes of all 35 levels are derived and compared with experiments and previous calculations.A remarkable improvement is shown in the accuracy of the results.New prediced values are also provided for lifetimes of 2p3d 3F levels.