Pd Ⅹ Ⅳ-Cd Ⅹ Ⅵ离子4s^24p^3和4s4p^4组态精细结构能级与跃迁的扩展分析

Extended analysis of fine-structure energy levels of 4s^24p^3 and 4s4p^4 for ions from PdⅩⅣ to Cd ⅩⅥ

用多组态HXR理论方法对KrⅣCdⅩⅥ离子4s24p3 和4s4p4 组态的精细结构能级进行了分析计算。在已有研究工作的基础上,通过对4s24p3 和4s4p4 组态能级的实验观测值与HXR计算结果之差ΔE沿等电子序列变化规律的分析,找出了ΔE随有效核电荷数Zc 变化的规律,预言并计算了PdⅩⅣCdⅩⅥ离子4 s2 4 p3 和4 s4 p4 组态能级,大部分预言计算值与实验结果的偏差小于1 0 0 cm-1 。由此还进一步计算了PdⅩⅣCdⅩⅥ离子4s24p3—4s4p4 跃迁的谱线波长、振子强度和跃迁概率。结果表明:除了4s24p3 2D5/2—4s4p42D5/2跃迁的谱线波长(29.992 nm)与实验值相差0.018 nm外,对于其余5 条谱线,预言值与实验值的偏差均不超过0.005 nm。

In this paper, fine-structure energy levels of configurations 4s^24p^3 and 4s4p^4 for Arsenic isoelectronic sequence ions from KrⅣto CdⅩⅥ are analysed by multi-configuration Hartree-Fock plus exchange-statistical-potential with relativistic corrections(HXR) method in Cowan'code. By analyzing variation of differences between the experimental data and the associated theoretical energies with Z_c along the sequence, a new formula has been found for fit calculation. With this new formula, the fine-structure levels of the configurations mentioned above are predicted, the uncentainty of most predicted energy level values with the associated experimental results are not more than 100 cm^(-1). The wavelengths, oscillator strengths and probabilities of transitions 4s^24p^3—4s4p^4 calculated with HXR method are given here too. The predicted wavelengths of transition 4s^24p^3—4s4p^4 for PdⅩⅣ are in well agreement with the experimental ones within 0.005 nm except that of transition 4s^24p^3 ~2D_(5/2)—4s4p^4 ~2D_(5/2) which is 0 018 nm, and the other results of transitions 4s^24p^3—4s4p^4 for ions from PdⅩⅣ to CdⅩⅥ are sheer predicted ones.