Knowledge Bank

New results are presented for the photoionization of Fe^+ in the close-coupling approximation using the R-matrix method. Cross sections are reported for the ^6D symmetry, including the ground state 3d^6 4s(^6D). The effect of photoionization of the 4s and the 3d shells is investigated through a series of calculations and it is shown that the latter makes the dominant contribution. The final 21-state expansion for the core ion Fe^{2+} includes all coupled states from the 3d^6 3d^5 4s and 3d^5 4p configurations. Photoionization of bound states along a Rydberg series is studied and the influence of strong photoexcitation-of-core type of resonances is pointed out. Partial cross sections for photoionization into individual final states of the core ion are also obtained. The new ground state cross section is up to two orders of magnitude higher than recently reported values.