Charge transfer in low-energy collisions of N³⁺, C⁴⁺ and N⁵⁺ with H and H₂

Cross sections are calculated for the charge transfer of N³⁺, C⁴⁺ and N⁵⁺ ions in collision with atomic and molecular hydrogen at impact energies up to 1 keV amu^-1. The adiabatic potential energies and the relevant radial coupling matrix elements of the quasi-molecular system in collision are first calculated using a model potential method. The collision dynamics are subsequently treated by a quantum mechanical formalism. The resulting equations are solved by first transforming to a diabatic representation. A detailed comparison of the results with experimental measurements is used to interpret and examine the validity of the theoretical model and the consistency of the experimental data.