Role of projectile electrons for target-recoil-charge-state production in intermediate-energy B2+-Ne collisions

We apply an independent electron model to study q-fold target-charge-state production in 25-600 keV/nucleon B2+-Ne collisions for which experimental and theoretical results were published recently [W. Wolff et al., Phys. Rev. A 84, 042704 (2011)]. The model treats projectile and target electrons using a common potential and makes use of a single-determinant wave function for the combined system. The calculated total cross sections for positive recoil ion production as well as for Neq+ production (q = 1,...,4) determined in coincidence with an unchanged projectile charge state agree well with experiment where available, i.e., in the 30-400 keV/nucleon energy range. At energies below 200 keV/nucleon the projectile electrons are shown to play a crucial role in reproducing the experimental data for q = 1,...,4. For the q >= 2 channels the inclusion of projectile electron contributions is needed even at energies above 200 keV/nucleon in order to reproduce the experimental data. As expected, the predictions for the q = 5 recoil charge state overestimate the experimental data due to a failure of the independent electron model for this extreme channel.