Comparison of laser-assisted charge transfer of symmetric and asymmetric colliding systems

We study the effect of an intense, ultra-short, and ultra-fast (1 and 2 fs) pulse with the aim to manipulate the charge transfer process of symmetric and asymmetric colliding systems. We report the total and state-selective cross section for charge transfer for the symmetric H+ + H and for the asymmetric He2++H system by means of the Crank-Nicolson method in the energy collision range for 1-10 keV/amu and 0.25-10 keV/amu, respectively. In this work, we show that the laser assistance do minimal contribution to charge transfer process in the symmetric system and that the laser pulse increases the charge transfer process at low impact energies for asymmetric system up to an order of magnitude. To asses the validity of our results, we compare our numerical results for the case of collisions with no laser to available experimental data in the literature showing good agreement for both systems.