Abstract
We present total single- and double-ionization cross sections for the collision systems and in the 1–1000 keV impact energy range with emphasis on microscopic response effects during the collision. The calculations rely on the basis generator method. In both collision systems, the response of the effective electronic interaction to the time-dependent density reduces the ionization cross section at low impact energies significantly. It is shown, in comparison with other theories, that this reduction is a consequence of time-dependent screening rather than due to dynamical correlation effects.
- Received 29 January 2003
DOI:https://doi.org/10.1103/PhysRevA.67.062711
©2003 American Physical Society