Autoionization and radiationless electron capture in complex spectra

The factorization-interpolation model, developed to compute collisional excitation rate coefficients efficiently in dense plasma, is applied here to autoionization and radiationless electron capture. Results using a parametric atomic central potential and factorization interpolation for autoionization rates and dielectronic recombination rate coefficients in Ne-like Fe are compared to multiconfigurational Dirac-Fock calculations. Agreement is very good. As a further application, we treat the problem of indirect ionization via collisional excitation followed by autoionization in Zn-like Mo.