ANALYSING THE LEVEL STRUCTURE OF 1P10 SERIES OF IONIZED ALUMINUM(Al Ⅱ) BY MULTICHANNEL QUANTUM DEFECT THEORY

We have analysed the level structrue of perturbed Rydberg series 1P10 of Al Ⅱ 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.