The Theoretical Calculations On The Energy Level Structure Of 1s²ng?5?n?9? States For Sc¹⁸⁺?Zn²⁷⁺ Ions

The theoretical research on the highly charged ions has always been one of the important research contents in the field of the Atomic Physics,the research is not only limited to the development of the Atomic Physics,but also related to the developments of many other fields and research topics.The valence electron of the highly charged system is excited to the orbital with a higher main quantum number n and a higher orbital quantum number l?l?4?,the nl states can be named Rydberg states of high angular momentum.Based on the variational method,this paper focuses on the energy level structure of 1s²ng?5?n?9?states for Sc^18+Zn²⁷⁺ions with Z=21³0.In the calculation of total energy,some corrections,such as core-correction,high-order angular momentum correction,first-order perturbation correction,QED effect correction,and high-order relativistic correction are added.The results calculated in this paper are more accurate with these corrections,and the understanding of energy level structure is more perfect than before.In the process of operation,the correlation coefficient of the wave function is adjusted with the Fortran program,the non-relativistic energy of the system and the total energy considering all the above corrections are calculated.With these results,the fine structure splitting and the ionization energy of the states are obtained too.As an efficient method,the semi-empirical method can predict the value of ionization energy with different n accurately.Then the ionization energy of higher n is extrapolated.In order to understand the characteristics of energy level structure deeply,the results are shown with Origin program.The calculations in this paper are precise calculations of Rydberg states with high angular momentum for highly charged ions,which has some uniqueness.In addition,some of the data cited in reference[27]are questioned.It is hoped that this paper can provide data for theoretical and experimental studies of Rydberg states with high angular momentum for systems highly ionized.