| Thème(s) : |
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Physique/Physique Nucléaire Théorique
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| Titre : |
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Analysis of the neutron and proton contributions to the pygmy dipole mode in doubly magic nuclei |
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| Auteur : |
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E. Yüksel, E. Khan1, K. Bozkurt |
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| Laboratoire : |
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| Résumé : |
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The electric dipole excitations are investigated in the framework of the self-consistent HF + RPA approximation with Skyrme interactions. Magic O, Ca, Ni and Sn isotopes are used to investigate low-lying modes. Neutron and proton transition densities analysis of each nucleus is provided to examine the behavior of Pygmy Dipole Resonance (PDR) of nuclei under excitation, showing a complex pattern along the nuclear chart. The PDR in the very neutron-rich 70Ca nucleus exhibits a novel mode of excitation, the so-called arch mode. The collectivity of the PDR is also analysed. |
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| Type de publication : |
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Articles dans des revues avec comité de lecture |
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Date de publication
ou d'écriture : |
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2012 |
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| Nom du périodique : |
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| Nuclear Physics A (Nucl. Phys. A) |
| Publisher |
Elsevier |
| ISSN |
0375-9474 |
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| Volume : |
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877 |
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| Page/Article : |
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35-50 |
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