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| HAL : in2p3-00202473, version 1 |
| arXiv : 0712.3254 |
| DOI : 10.1103/PhysRevC.77.024304 |
| Fiche détaillée |  Récupérer au format |
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| Physical Review C 77 (2008) 024304 |
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| Pygmy dipole response of proton rich argon beyond the random phase approximation and no-core shell model |
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| C. Barbieri1E. Caurier2K. Langanke1, 3G. Martínez-Pinedo1 |
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| (2008) |
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| The occurrence of a pygmy dipole resonance in proton rich Ar-32 and Ar-34 is studied using the unitary correlator operator method interaction Vucom, based on Argonne V18. Predictions from the random phase approximation (RPA) and the shell model in a no-core basis are compared. It is found that the inclusion of configuration mixing up to two-particle--two-holes broadens the pygmy strength slightly and reduces sensibly its strength, as compared to the RPA predictions. For Ar-32 a clear peak associated with a pygmy resonance is found. For Ar-34, the pygmy states are obtained close to the giant dipole resonance and mix with it. |
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| 1 : | GSI - Gesellschaft für Schwerionenforschung mbH |
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| 2 : | DRS-IPHC - Département Recherches Subatomiques |
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| 3 : | Institut für Kernphysik |
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| Thème(s) | : | Physique/Physique Nucléaire Théorique |
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| Lien vers le texte intégral : |
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| http://fr.arXiv.org/abs/0712.3254 |
| in2p3-00202473, version 1 | |
| http://hal.in2p3.fr/in2p3-00202473 | |
| oai:hal.in2p3.fr:in2p3-00202473 | |
| Contributeur : Béatrice Forrler | |
| Déposé pour le compte de : | |
| Soumis le : Lundi 7 Janvier 2008, 10:23:05 | |
| Dernière modification le : Mardi 25 Mars 2008, 15:41:40 | |
