Charge transfer in collisions of Na-9(+) clusters with Cs atoms: a comparison with experiment

We have evaluated charge transfer cross sections for Na-9(+) + Cs collision s using a molecular close-coupling formalism in the framework of the indepe ndent electron model. Our results are in good agreement with recent experim ental measurements below nu = 0.04 au and confirm existing discrepancies wi th previous experimental data. Ar low velocity, the calculated cross sectio n exhibits the typical behaviour found in ion-atom collisions: a rapid incr ease with nu followed by a plateau. More interestingly, our theory predicts that the cross section increases again at higher velocities, which calls f or experimental confirmation.