Al Ⅱ~1P_1~0序列能级结构的多通道量子亏损理论分析

ANALYSING THE LEVEL STRUCTURE OF ~1P_1~0 SERIES OF IONIZED ALUMINUM(Al II) BY MULTICHANNEL QUANTUM DEFECT THEORY

本文利用多通道量子亏损理论(MQDT),分析了Al II受干扰序列~1P_1~0的能级结构。分析表明,主序列3snp^1P_1~0受到了来自双激发态3p4s^1P_1~0的强烈干扰。这种相互作用使3p4s^1P_1~0分布到整个3snp^1P_1~0之中,而不再对应于一条单独的谱线。利用拟合能级实验数据所得的MQDT参数,计算了序列3snp^1P_λ~θ中n≤50的能级。对于已测得的能级,计算结果与实验值符合得很好。

We have analysed the level structrue of perturbed Rydberg series 1P_1~0 of Al11 using the multichannel quantum defect theory (MQDT). The analysis shows that the main series 3snp1P10 is perturbed so strongly by the doubly excited state 3p4s1P10 such that the latter has entirely distributed into the main series and does not correspond to a single spectrum line any more. The experimental energy levels are well reproduced and the energy levels for n≤50 are calculated.