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Statut |
Confirmé |
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Série |
IPN-THEO |
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Domaines |
nucl-th |
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Date |
Mercredi 20 Décembre 2017 |
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Heure |
11:30 |
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Institut |
IPN |
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Salle |
Bâtiment 100, Salle A015 |
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Nom de l'orateur |
Blanchon |
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Prenom de l'orateur |
Guillaume |
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Addresse email de l'orateur |
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Institution de l'orateur |
CEA |
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Titre |
Gogny-Based Optical Potential |
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Résumé |
We present a nucleon elastic scattering calculation based on Green function formalism in the random-phase approximation. The finite-range Gogny effective interaction is used consistently throughout the whole calculation to account for the complex, nonlocal, and energy-dependent optical potential. Effects of intermediate single-particle resonances are included and found to play a crucial role in the account for measured reaction cross sections. Double counting of the particle-hole second-order contribution is carefully addressed. The resulting integro-differential Schrödinger equation for the scattering process is solved without localization procedures. The method is applied to neutron and proton elastic scattering from $^40$Ca and $^48$Ca. A successful account for differential and integral cross sections, including analyzing powers, is obtained for incident energies up to 30 MeV. Discrepancies at higher energies are related to a much-too-high volume integral of the real potential for large partial waves. This work opens the way to simultaneously assess effective interactions suitable for both nuclear structure and reactions. |
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Numéro de preprint arXiv |
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Commentaires |
$ $ |
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Fichiers attachés |
- 2017_12_20_G_Blanchon.pdf (206170 bytes)
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