Dielectronic recombination for boronlike ions

We have calculated the total dielectronic recombination ~DR! coefficients for the P1/2 and P3/2 states in B-like Ti, Fe, and Mo ions for electron temperatures 0.1<T<10 000 eV. The calculations are carried out using the multiconfiguration Dirac-Fock method in intermediate coupling with a configuration interaction. We find that accurate Coster-Kronig energies are critical for a successful determination of lowtemperature DR coefficients. We also find that the DR involving fine-structure excitations can be as important as the 2s-2p excitation channels in the low-temperature regime for some ions. @S1050-2947~98!02612-2#