Spin-Orbit Components of Resonant Satellite Photoionization of Atomic Cu

A new approach of the study on the spin-orbit components of resonant satellite photoionization has been carried out from many-body perturbation theory. The 3d⁸ 4s² (¹G, ³F,¹D) satellite lines of atomic Cu are resonantly enhanced and separated by the spin-orbit splitting at the energy of the 3p⁶3d¹⁰4s → 3p5 (² P_1/2, ² P_3/2) 3d¹⁰ 4s² transitions. The calculated results showing that the spin-orbit splitting leads to the separation of resonant peaks of satellite lines are in good agreement with experiment.