LASER-ASSISTED DIELECTRONIC RECOMBINATION IN C4+ IONS

We study the effect of laser-driven transitions between autoionizing r esonances on the dielectronic recombination rates observed after the f ormation of such resonances in electron-ion collisions. The autoionizi ng states of S-1(e) and P-1(0) symmetry belonging to the 2l2l' and 2l3 l' configurations of C4+ are considered. The resonance parameters are calculated in the Feshbach formalism and compared with other accurate calculations, and transition dipole moments between the autoionizing s tates are obtained. The rates of dielectronic recombination and autoio nization under the influence of the laser field are calculated using t he density matrix approach for realistic parameters. A simple formulat ion of the problem is also proposed in the resolvent operator techniqu e. The feasibility of an experiment is discussed.