Abstract
•We treat theoretically highly charged ions-argon dimer collisions.•Tunneling is important for large impact parameters.•Coulomb interaction between argon ions of the dimer plays an important role.•The dimer remains intact during the collision time.
We have evaluated removal and charge transfer cross sections for Xe25+–Ar2 collisions at the impact velocity v=0.3a.u. The theoretical method includes the many-electron aspect of the problem and makes use of the classical molecular dynamics (CMD), which includes over-barrier (OB) and tunneling (TU) mechanisms. We have studied the Coulomb fragmentation of the dimer and showed the preference for asymmetric channels.