Photoionization cross sections for Fe XVI and Fe XVII recombination rate coefficients

The Breit-Pauli R-matrix codes are utilized in a detailed study of the phot oionization of the ground state of Fe XVI (2s(2)2p(6)3s(2)S(1/2)). High res olution total and partial cross sections an obtained using 37 J pi configur ation interaction type wavefunctions to represent the residual ion, Fe XVII , after 3s, 2p and 3s photoionization. For the total cross section, the wor k of Verner et al, and previous Opacity Project calculations are in fair ag reement with the present results, while relativistic effects are seen to ha ve a noticeable but not an overly significant effect on the background cros s section. The derived partial cross sections are used in a calculation of rates for the recombination of states of Fe SW to the ground state of Fe XV I.