Dielectronic recombination rate coefficient for Cu-like Au50+ ion

摘要

The rate coefficients αDR of dielectronic recombination (DR) for Cu-like Au50+ ion collided with the incident free electron are calculated based on the quasi-relativistic multi-configuration Hartree-Fock theory. The results clearly show that the oDR of all recombination channels exhibits resonance characters with electron temperature. At lower temperatures, the recombination for electrons caused by 4s excitation is dominant through outer electron radiative transitions among the intermediate doubly excited autoionizing levels, in which the most components come from 3d105pns states,whereas with increasing electron temperature, DR caused by 3d excitation turns out to be dominant, and the contribution from the 3d94s4fnf state to the total rate coefficient of electron 3d is the largest with αDR = 1.15 × 10-11 cm3.s-1at an electron temperature of Te=0.35 keV. Under this condition, there exists a strong competition between the two types of recombination channels.