Liang Liang, Wen-xian Jiang, Chao Zhou
Physics Department, Xi’an University of Architecture and Technology, Xi’an 710055, People’s Republic of China
The photoionization cross section, energy levels and widths of 22 Rydberg series (in the autoionization region) for Na-like Ar VIII were investigated by using of R-matrix method. The relativistic distorted-wave method is used to calculate the radial functions, and QB method of Quigly–Berrington [L. Quigley, K. A. Berrington, J. Pelan, Comput. Phys. Commun. 144 (1998) 225] is employed to calculate the resonance levels and widths. We have identified the formant in the figure of the photoionization cross section.