Final-state angular momentum distributions in charge transfer collisions at high energies

We investigate the influence of different terms of the Born series on the final-state angular momentum (l) distribution and the anisotropy of the captured electron. A variety of different l distributions depending on the projectile velocity v and the charge asymmetry Z_p/Z_T of the collision system can be found, revealing different underlying mechanisms for charge transfer. We compare the predictions of perturbation theories such as the first and second Born approximation, the continuum distorted wave (CDW) approximation and the post-collision interaction (PCI) model valid at high velocities with those of the “quasi-resonant over barrier” model of charge transfer valid at intermediate velocities.