Double ionization of rare-gas dimers:NeKr+eNeKr2+

Abstract
The existence of the doubly charged dimer ion NeKr2+ is substantiated by electron-impact ionization of the mixed van der Waals dimer NeKr. The stability of this doubly charged molecule is discussed with the use of semiquantitative potential energy curves. The electron-impact-ionization appearance potential confirms the prediction from the potential-energy curves.