Microscopic description of low-energy neutron scattering by nuclei |
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Authors: | J.M. Normand |
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Affiliation: | Service de Physique Théorique, CEN Saclay, BP no. 2, 91190 Gif-sur-Yvette, France |
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Abstract: | The Bloch and Gillet shell-model formalism extended to continuum states is applied to lowenergy neutron scattering by nuclei. It is shown that complete antisymmetrization leads in the r-representation to corrective terms which yield important corrections to the scattering lengths. Calculations are performed within a model restricted configuration space for the target nuclei 12C, 13C, 16O, 17O and 40Ca. We predict values for the spin-dependent scattering amplitude for 13C and 17O. The antisymmetrization problem in the case of a large configuration mixing is studied for the 19F target nucleus. The resonant effects of the compound nucleus are then very important and the results become very sensitive to the configuration space and the interaction parameters. |
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Keywords: | Nuclear reactions |
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