Classical overbarrier model to compute charge exchange and ionization between ions and one-optical-electron atoms - art. no. 042711

摘要

In this paper, we study theoretically the process of electron capture between one-optical-electron atoms (e.g., hydrogenlike or alkali atoms) and ions at low-to-medium impact velocities (v/v(e)approximate to 1) working on a modification of an already developed classical overbarrier model [V. Ostrovsky, J. Phys. B 28, 3901 (1995)], which allows us to give a semianalytical formula for the cross sections. The model is discussed and then applied to a number of test cases, including experimental data as well as data coming from other sophisticated numerical simulations. It is found that the accuracy of the model, with the suggested corrections and applied to quite different situations, is rather high. Furthermore, even ionization can he computed within the same framework. [References: 22]