Double-Electron Capture Processes in Charge Transfer Reactions

摘要

Double-electron capture processes may be important in some collisions of multiply charged ions with atomic or molecular targets and have thus to be taken into account carefully.An illustration of these mechanisms is presented in parallel with single-electron capture on two examples involving the quadruply charged ions B~(4+) and N~(4+) in collision with a helium target.A complete ab initio molecular treatment of the potential energy curves and couplings followed by a semiclassic collision dynamics has been performed for these systems.