| Thème(s) : |
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Physique/Physique Nucléaire Théorique
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| Titre : |
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Low-lying dipole response in the stable 40,48Ca nuclei within the second random-phase approximation |
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| Auteur : |
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D. Gambacurta1, M. Grasso2, F. Catara |
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| Laboratoire : |
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| Résumé : |
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The low-lying dipole strength distributions of 40Ca and 48Ca, in the energy region between 5 and 10 MeV, are studied within the second random phase approximation (RPA) with Skyrme interaction. Standard RPA models do not usually predict any presence of strength in this energy region, while experimentally a significant amount of strength is found. The inclusion of the 2 particle -2 hole configurations allows to obtain a description in a rather good agreement with the experimental data. The properties of the most collective state are analyzed in terms of its 1 particle -1 hole nature and its transition densities. |
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| Type de publication : |
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Communications avec actes |
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Date de publication
ou d'écriture : |
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2012 |
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| Date de la présentation : |
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10/07/2012 |
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Nom du périodique
Titre de l'ouvrage : |
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AIP Conference Proceedings |
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| Audience : |
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internationale |
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| Volume : |
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1491 |
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| Editeurs scientifiques : |
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T. Niksic, M. Milin, D. Vretenar, S. Szilzer |
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| Page/Article : |
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186-189 |
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| Editeur : |
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American Institute of Physics |
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| Collection : |
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AIP Conference Proceedings |
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| Nom du colloque : |
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Nuclear structure and dynamics II |
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| Ville du colloque : |
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Opatija |
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| Pays du colloque : |
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Croatie |
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| Date du colloque (début) : |
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09/07/2012 |
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| Date du colloque (fin) : |
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13/07/2012 |
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| Identifiant local : |
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GANIL 2012-116 T |
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| Classification PACS : |
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21.60.Jz,21.10.Re,27.40.+z |
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| Mot(s)-clé(s) : |
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Pygmy – Exotic Nuclei – Strength Distributions – Linear Response |
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