Satellite lines in the photoionization of ions: The Be isoelectronic sequence

Abstract

Partial photoionization cross sections from the ${}^{1}S$ ground and the ${}^{3}P$ metastable states of the Be isoelectronic series to different final states, including a number of satellite (ionization plus excitation) channels are studied using the $R$-matrix method. As expected, the ratio of each satellite partial cross section to the dominant partial cross section is found to be a monotonic decreasing function of $Z$ for both the ground and the metastable states. The complicated patterns of these ratios as functions of photon energy are analyzed.