Ionization in ion-atom collisions using coordinate scaling

Wei Guo, B.D. Esry
(J.R. Macdonald Laboratory, Kansas State University)

The ionization cross sections for prototype ion-atom collisions are calculated in the semi-classical impact parameter approximation. To reduce the computational burden of solving the time-dependent Schrödinger equation and improve its accuracy, the coordinate scaling approach is employed. This method is especially useful for ionized electrons and, when combined with a flexible grid method, largely eliminates the need for electron translation factors.

This work was supported by the Chemical Sciences, Geosciences and Biosciences Division,
Office of Basic Energy Sciences, Office of Science, U.S. Department of Energy.

Submitted to DAMOP 2002, May 2002 in Williamsburg, VA.

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