Theoretical Research On The Ion Of Se³¹⁺（1s²np-1s²n’d） Transition Behavior With The Full Core Plus Correlation Method

At the first of this paper,provides an overview to the scope of atomic and molecularphysics.Then this article introduce the multi-electron atom structure,however,the highlycharged ions have been an important reach area to be illustrated.The FCPC method isextended to be calculated the energy structure of1s²nl （l=p,dï¼›n≤9） states of Se³¹⁺ion.Thestates include ionization energy;excitation energy and transition energy.After these,the articlealso details the principle and the achievement of Full-core plus correlation with brief words,Inorder to obtain the high-precision theoretical results.At the same time,the contributions fromhigher angular momentum partial wave and the core-correction are also involved.In thecalculation of the fine structure splitting for these states,spin-orbit,spin-other-orbitinteractions,QED contribution and high-order relativistic contribution.The results of this workgenerally agree with some literatures.In addition,this paper calculate the dipole osscillator strengths of1s²np-1s²n′d（2≤n≤9，3≤n′≤9）with the Se³¹⁺ion in FCPC wave functions,Finally,according to the theory ofQDT,calculated Se³¹⁺ion1s²np-1s²n′d（2≤n≤9，3≤n′≤9） with the quantum defect theory to theion energy and oscillator strength of the theroy predicted accuratelly extrapolated to includethe entire cotinuum state to the domain.