Abstract
A surface approximation to the multistep amplitude for direct reactions is presented. Within this approximation, the distorted-wave Born-approximation series is summed in closed form, and the result is tested by comparing with exact coupled-reaction-channels calculations for and . The approximation gives a good representation of the exact results, especially for the process which is dominated by strong absorption of the deuteron.
- Received 17 June 1975
DOI:https://doi.org/10.1103/PhysRevLett.36.21
©1976 American Physical Society