Precision Relativistic eigenchannel R-matrix calculation of the spectroscopy and electron O+ ion scattering in Oxygen system

29th International Conference on Photonic, Electronic, and Atomic Collisions

Zeng, De-Ling^1,2 ; Gao, Xiang^2 ; Jin, Rui^2,3 ; Li, Jia-Ming^1,3,4

Key Laboratory for Laser Plasmas, Ministry of Education, Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai

200240, China^1

Beijing Computational Science Research Center, Beijing

100193, China^2

Department of Physics, Center for Atomic and Molecular Nanosciences, Tsinghua University, Beijing

100084, China^3

Collaborative Innovation Center of Quantum Matter, Beijing

100084, China^4

关键词: Analytical continuation;    High-dimensional;    Quantum defects;    R-matrix calculation;    R-matrix method;    Scattering calculations;    Scattering matrices;    Spectroscopic data;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/635/5/052056/pdf
DOI  :  10.1088/1742-6596/635/5/052056

来源: IOP

【 摘 要 】

The scattering matrices of Oxygen in various energy regions are calculated using our modified eigenchannel R-matrix method R-R-eigen. We can obtain abundant atomic dynamical data with accuracies determined based on analytical continuation properties of the scattering matrices. Our calculated discrete and autoionization spectrum can be readily examined with the experiment data. Our result agrees well with experiment. By comparing with available spectroscopic data using our newly proposed projected high dimensional quantum-defect graph (symmetrized), which is a generalization of Lu-Fano plots, we can readily determine the precision of scattering calculations in a systematical way.