Multiplet and intrashell transitions in resonant radiative capture by F ii

A detailed analysis of the resonant radiative capture process by F ii is carried out in the low-energy region. Contributions from the intrashell excitation modes with n=0 and l=1 are estimated. In addition, several peaks in the cross sections are found near the elastic threshold 3P that correspond to the excitation transitions among the ground-state multiplets, with n=0, l=0. They are important for temperatures below 0.1 Ry. The n=0, l=1 contribution is large at higher temperatures, in the region of 1 Ry, where the n 0 mode is also present. Cross sections for the direct radiative recombination are estimated to be very large for temperatures below 0.2 Ry.