A Calculation of Direct Radiative Recombination Cross Sections and Rate Coefficients

We calculate direct radiative recombination cross sections and rate coefficients for Be-like O⁴⁺, Si¹⁰⁺ and Na-like Fe¹⁵⁺ using nonrelativistic dipole approximation. In order to incorporate the screening effect due to the inner shell electrons in the calculation, we use the distorted wave method instead of pure coulomb approximation with effective charge. The calculated cross sections and rate coefficients are in agreement with other theoretical calculations and the experimental data.