Theoretical state-to-state inelastic cross sections for collisions of Ar+(2P3/2, 2P1/2) with N2

State-to-state cross sections for fine-structure transitions and vibrational excitation have been calculated for collisions of Ar+(2P3/2, 2P1/2) with N2 over the relative collision energy range 1–4000 eV. The computations were done by means of a vibronic semiclassical method, and the potential energy surfaces of Archirel and Levy were used. The cross sections are in good agreement with the limited amount of experimental data now available. The cross sections for fine-structure transitions are surprisingly large at all energies.