Modeling C60 Charge Exchange and Fragmentation

Charge exchange in atom-ion systems have been studied for decades due to its relevance to various branches of physics. Recently, there has been more attention drawn to charge exchange collisions with complex targets involving a very large number of degrees of freedom such as large molecules, nano-size clusters, condense matter materials and others. We present a theoretical analysis of C60 charge-transfer processes in slow collisions with various atomic cations. We use a simplified Jellium model to describe C60 electronic sub-system and to reduce the complexity of multi-channel elastic and inelastic processes observed in these collisions. Realistic potentials have been constructed to describe these scattering processes. Combining results of scattering calculations performed with these potentials and Landau-Zener charge transfer theory, we calculated the cross sections from C60 + X⁺ (X represents Oxygen, Nitrogen or Neon) collisions that agree well with existing experimental data.