| HAL : in2p3-00619310, version 1 |
| DOI : 10.1016/j.physletb.2011.08.004 |
| Fiche détaillée | Récupérer au format |
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| Physics Letters B 703 (2011) 417-421 |
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| Spectroscopy of 39,41Si and the border of the N = 28 island of inversion |
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| (2011) |
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| The structure of the very neutron-rich nuclei 39Si and 41Si has been investigated via in-beam γ -ray spectroscopy and few-nucleon knockout from radioactive beams. The observation of low-lying states in 39Si is a clear evidence for a drastic lowering of the intruder neutron 3/2− state when going from Z = 20 to Z = 14. The energy of the only γ -ray transition (672(14) keV) observed in 41Si is significantly lower than that of the first excited state in 47Ca (2014 keV) suggesting a deformed ground state for 41Si. These results are consistent with large-scale shell-model calculations implying that strong proton- neutron correlations are the main reason for the lowering of the intruder configurations over the normal ones. |
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| NEX structure nucléaire |
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| Thème(s) | : | Physique/Physique Nucléaire Expérimentale |
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| Nuclear structure – Knockout reactions – Shell closures – Neutron-rich Si nuclei |
| in2p3-00619310, version 1 | |
| http://hal.in2p3.fr/in2p3-00619310 | |
| oai:hal.in2p3.fr:in2p3-00619310 | |
| Contributeur : Michel Lion | |
| Soumis le : Mardi 6 Septembre 2011, 10:43:03 | |
| Dernière modification le : Lundi 22 Avril 2013, 15:11:36 | |