Abstract
We study multiple scattering off nuclei in the closure approximation. Instead of reducing the dynamics to one particle potential scattering, the scattering amplitude for fixed target configurations is averaged over the target groundstate density via stochastic integration. At low energies a strong coupling limit is found which can not be obtained in a first order optical potential approximation. As its physical explanation, we propose it to be caused by trapping of the projectile. We analyse this phenomenon in mean field and random potential approximations.
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This work was supported in part by the Bundesministerium für Forschung und Technologie (SL) and by the Japan Society for the Promotion of Science (DS)
We would like to thank J.-P Dedonder, F. Lenz and M. Thies for discussions, K. Yazaki for comments on the manuscript and D. Lehmann and E. Schneid for communicating their results to us prior to publication. We would also like to acknowledge the kind hospitality of the Université Paris 7 where part of this work has been carried out.
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Lenz, S., Stoll, D. Trapping of projectiles in fixed scatterer calculations. Z. Physik A - Hadrons and Nuclei 351, 19–27 (1995). https://doi.org/10.1007/BF01292782
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DOI: https://doi.org/10.1007/BF01292782