Precision Relativistic eigenchannel R-matrix calculation Of Ne+ discrete energy region scattering matrix

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

Jin, Rui^1,2 ; Han, Xiao-Ying^3 ; Gao, Xiang^2 ; Zeng, De-Ling^4 ; Li, Jia-Ming^1,4,5

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

100084, China^1

Beijing Computational Science Research Center, Beijing

100084, China^2

Institute of Applied Physics and Computational Mathematics, Beijing

100094, China^3

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

200240, China^4

Collaborative Innovation Center of Quantum Matter, Beijing

100084, China^5

关键词: Analytical continuation;    Multi-channel quantum defect theory;    Photoionization spectra;    Physical parameters;    Physical quantities;    R-matrix calculation;    Scattering matrices;    Transformation matrices;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/635/9/092076/pdf
DOI  :  10.1088/1742-6596/635/9/092076

来源: IOP

【 摘 要 】

With our relativistic eigenchannel R-matrix method R-R-Eigen, the physics parameters of Ne+in multi channel quantum defect theory (MQDT) are calculated directly, such as eigenchannel quantum defects, transformation matrix etc al. Various physical quantities can then be derived from a straightforward application of the MQDT procedure. Using our proposed projected high dimensional quantum-defect graph (symmetrized) - a generalization of Lu-Fano plots, we can readily determine the accuracies of the calculated MQDT physical parameters (ie. scattering matrix) systematically against the experimental energy levels. Based on the analytical continuation property of short-range scattering matrix below and above threshold, the origin of each resonant peak observed in the experiment can be designated. there is possibility to adjust calculated total photoionization spectra to fit the experiment.