Dynamical study on resonance by using a wave packet propagation method: Electron capture in collision of N⁵⁺ ions with H atoms

To establish the dynamical aspects of shape resonance, we investigate the electron capture processes N⁵⁺ + H → N⁴⁺(4s, 4p) + H⁺ by using a wave packet propagation method that can treat non-adiabatic collision processes. It is found that the incident wave packet is trapped into quasi-bound potentials when the collision energy coincides with that of the rovibrational state of the quasi-molecule. The wave packet component trapped in the N⁵⁺+H effective potential transfers to electron capture channels rather than returns to the initial channel by tunneling again.