Non-eikonal corrections in potential scattering on two centres |
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Authors: | M Bleszynski T Jaroszewicz |
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Institution: | 1. Theoretical Division, Los Alamos Scientific Laboratory, University of California, Los Alamos, NM 87545, USA;2. Physics Department, UCLA, Los Angeles, CA 90029, USA |
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Abstract: | Scattering of a spinless projectile from a system of two (over-lapping or non-overlapping) local potentials is studied in the first-order eikonal expansion. Corrections to the Glauber formula are found to come mainly from the non-eikonal propagation in the “direct” double scattering, and not from multiple scattering (“reflections”).A comparison is made between the exact (to the leading order) and two approximate results: (i) based on the theory of scattering from non-overlapping potentials, and (ii) neglecting the reflection terms and adopting the local “Born-like” off-shell extrapolation of the two-body amplitudes. The second approximation is found to be more accurate and technically simpler in calculation of multiple scattering from many-body systems. |
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Keywords: | Nuclear reactions |
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