The Research On The Spectral Properties Of Rb³⁴⁺ Ion And Sr³⁵⁺ Ion

The characteristics of atomic structure and transition behavior of highly ionized ions have attracted much attention.For highly ionized ions,the energy structure and spectral properties are very different from the neutral atoms.The radiation and absorption spectra of highly ionized ions are more complex and diverse.Now,a number of theoretical methods for studying highly ionized ions have been proposed,such as Hartree-Forck method,configuration interaction method,many-body perturbation theory and so on.This thesis uses the full core plus correlation（FCPC）method to calculate the energy structure of Rb³⁴⁺ion and research the transition behavior of Rb³⁴⁺ion and Sr³⁵⁺ion.In contrast with other theoretical methods（such as CI method,MBRT method etc.）,FCPC method has a special wave function of Lithium-like ions.It regards the 1s²-core wave function as an independent term in the total wave function,so that the convergence speed of wave function is accelerated greatly.The interactions between valence electron and the core or other electrons,for example the core polarization,the electron correlation effect and so on,are described by using a better CI wave function.Using the Rayleigh-Ritz variational method,the parameters of the wave function are obtained by several optimization.Finally,the wave functions of Rb³⁴⁺ion and Sr³⁵⁺ion are determined.The non-relativistic energies of Rb³⁴⁺ion are calculated by using the wave function and Hamiltonian operator.At the same time,the total energy considering the relativistic effect and QED effect with the perturbation theory is calculated.Then,the dipole transitions of Rb³⁴⁺ion and Sr³⁵⁺ion are studied,and their non-relativistic oscillator strengths for 1s²nl-1s²n′l′dipole transition are calculated.In order to get more accurate calculation results,the non-relativistic oscillator strength is modified by replacing the non-relativistic transition energy with the relativistic transition energy.On this basis,this thesis extrapolates the oscillator strength by combining QDT and oscillator strength.The theoretical study of the dipole transition from discrete state to continuous state is completed.Finally,the transition probabilities of dipole transitions for the Rb³⁴⁺ion and Sr³⁵⁺ion are calculated,and the rules of transition behavior of valence electron are acquired.