Pantheon SEMPARIS Le serveur des séminaires parisiens Paris

Statut Confirmé
Domaines nucl-th
Date Mercredi 20 Décembre 2017
Heure 11:30
Institut IPN
Salle Bâtiment 100, Salle A015
Nom de l'orateur Blanchon
Prenom de l'orateur Guillaume
Addresse email de l'orateur
Institution de l'orateur CEA
Titre Gogny-Based Optical Potential
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.
Numéro de preprint arXiv
Commentaires $ $
Fichiers attachés
  • 2017_12_20_G_Blanchon.pdf (206170 bytes) OPEN

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