Photoionization of Ne-like Ca XI

Abstract

Relativistic calculations of photoionization cross sections of Ne-like Ca XI using the Breit–Pauli R-matrix method in close-coupling and LS-coupling approximation. In this work, the relativistic distorted-wave method is employed to calculate the fine-structure energy levels, radial functions and continuum wave functions, and the Breit–Pauli R-matrix method is employed to calculate the photoionizaton cross section for photon energy from 43.5 to 73.6 Ry. The resonance structure in the photoionization of Ne-like Ca XI for ejection of a 2p or 2s electron from the ground 2s22p6 1S0 or excited state 2s22p53s 1,3P has been investigated.