摘要
We here combine the eigenchannel theory and R-matrix theory to calculate the eigenchannel parameters of multichannel quantum defect theory directly.There are two advantages:(1)an analytical unified treatment of perturbed discrete Rydberg states,autoionizing states and their adjacent continuum to avoid numerical calculations,outside the R-matrix box;(2)clear assignment of overlapped resonances.
基金
Supported in part by the Chinese Science and Technology Commission
the National High-Tech.ICF Committee in China
the Science and Technology Funds of CAEP
the Chinese Research Association for Atomic and Molecular Data
the National Natural Science Foundation of China.
