A SIMPLE CONSTRUCTION PROCEDURE OF ABSORBING POTENTIALS

A simple procedure to construct absorbing potentials is provided. It i s based on adding a series of equal length complex square barriers and optimizing their real and imaginary parts to achieve maximum absorpti on at a selected set of momenta. The method is flexible, robust, and e asy to apply. The absorption widths obtained are better than other kno wn functional forms for the important low momentum region. A compariso n is made with parameters used for an H+H-2 collinear collision. (C) 1 998 Elsevier Science B.V. All rights reserved.