| Atomic spectroscopy,as an effective method,reveals the mystery of the internal structure of atoms,but due to the limitations of experimental measurements,there are still many unsolved mysteries in the effects of electron correlation,relativity and quantum electrodynamics.In this work,the multiconfiguration Dirac–Hartree–Fock（MCDHF/RCI）method and the relativis-tic multi-body perturbation theory（MBPT）method are used to study the precise spectra of the corresponding particles in detail with electronic systems such as sulfur and oxygen atomic pa-rameters.Large-scale and system level energy,transition life,transition rate,oscillator strength,line strength and wavelength were obtained.By comparing the spectra with experimental mea-surements and analyzing the differences of these spectra,we can obtain meaningful spectral lines for celestial body and plasma diagnosis.The specific work is as follows:First,we calculate the excitation energy and lifetime of boron-like sulfide ions n≤5 with the lowest 213 configurations using the highly correlated wave functions optimized by the method of MCDHF/RCI.In addition,multipole transition rates,line strength,oscillator strength and other transition data related to these energy level transitions are also provided.The theoret-ically calculated excitation energy and the experimental energy provided by the NIST database are systematically compared,and the indistinguishable and problematic experimental data are pointed out.After excluding these indistinguishable data,for valid n≥3 high shell config-uration data,the standard deviation of the theoretical data of the excitation energy and the experimental data is 12±341 cm-1.The accurate calculation of the energy level results proves that the detailed ab initio calculation can assist in identifying and resolving the spectral lines of astronomical radiation such as stars in astrophysics research.At present,the experimental data of boron-like sulfur ions concerned by celestial bodies is scarce.The high-precision atomic data provided by our work can provide reference for their observations.Second,intensive research on the fine spectra of S-like Cr IX to Cu XIV electronic sys-tem particles.For S-like n=3 shell 3s23p4,3p6,3s3p43d,3s23p23d2,3s3p5,3s23p33d and3s3p33d2configuration,We used MCDHF/RCI method in the GRASP2K package to calculate the energy of the energy levels and the corresponding transition data.The analysis found that excitation energy of the lowest 47 levels generated by 3s23p4,3s3p5and 3s23p33d configura-tion is in good agreement with the experimental value of Fe XI ions newly estimated by Del Zanna,and the spectral accuracy is achieved.So our energy can be reliably used to identi-fy almost unknown 3s23p33d energy levels in other S-like ions in astrophysics and laboratory spectra.On the contrary,the study also found that there is a spectral line that is significantly different from the 3s3p43d energy level.We believe that more detailed experimental research on this energy level is needed,and some new tentative identifications are recommended.The benchmarks we provide show that our consistent radiation dataset is accurate and can be used to model spectral lines.Third,energy form 2sn2pm（0≤n≤2,4≤m≤6）,2sn2pm3l（1≤n≤2,3≤m≤4,l=s,p,d）,2s22p34l（l=s,p,d,f）of the lowest 254 configurations for O-like Ar XI to Cr XVII have been studied in detail and provided a set of accurate theories energy level transi-tion data including electrical dipole（E1）,electrical quadrupole（E2）,magnetic dipole（M1）,magnetic quadrupole（M2）transitions.The large configuration state function in the method of MCDHF/RCI is used to explain systematically the valence-valence,core-valence,and core-core correlation effects.Compared with the experimental values collected by the NIST ASD and CHIANTI databases,our theoretical values are very accurate and reliable.To our knowl-edge,high-accuracy data for oxygen-like ions is still lacking,thus we hope that our data will be useful for astronomical studies to help identify and resolve new emission spectral lines in the spectrum of the celestial bodies. |
