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| HAL : in2p3-00472413, version 1 |
| arXiv : 1004.1556 |
| DOI : 10.1103/PhysRevLett.104.192501 |
| Fiche détaillée |  Récupérer au format |
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| Physical Review Letters 104 (2010) 192501 |
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| Migration of nuclear shell gaps studied in the d(24Ne,p gamma)25Ne reaction |
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| (2010) |
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| The transfer of neutrons onto 24Ne has been measured using a reaccelerated radioactive beam of 24Ne to study the (d,p) reaction in inverse kinematics. The unusual raising of the first 3/2+ level in 25Ne and its significance in terms of the migration of the neutron magic number from N=20 to N=16 is put on a firm footing by confirmation of this state's identity. The raised 3/2+ level is observed simultaneously with the intruder negative parity 7/2- and 3/2- levels, providing evidence for the reduction in the N=20 gap. The coincident gamma-ray decays allowed the assignment of spins as well as the transferred orbital angular momentum. The excitation energy of the 3/2+ state shows that the established USD shell model breaks down well within the sd model space and requires a revised treatment of the proton-neutron monopole interaction. |
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| Structure nucléaire |
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| Thème(s) | : | Physique/Physique Nucléaire Expérimentale Physique/Physique Nucléaire Théorique |
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| Lien vers le texte intégral : |
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| http://fr.arXiv.org/abs/1004.1556 |
| in2p3-00472413, version 1 | |
| http://hal.in2p3.fr/in2p3-00472413 | |
| oai:hal.in2p3.fr:in2p3-00472413 | |
| Contributeur : Michel Lion | |
| Soumis le : Lundi 12 Avril 2010, 08:48:46 | |
| Dernière modification le : Jeudi 25 Avril 2013, 22:14:24 | |
