Accéder directement au contenu Accéder directement à la navigation
Article dans une revue

Halo Structure of the Island of Inversion Nucleus 31Ne

Abstract : The cross sections for single-neutron removal from the very neutron-rich nucleus 31Ne on Pb and C targets have been measured at 230 MeV=nucleon using the RIBF facility at RIKEN. The deduced large Coulomb breakup cross section of 540(70) mb is indicative of a soft E1 excitation. Comparison with direct-breakup model calculations suggests that the valence neutron of 31Ne occupies a low-‘ orbital (most probably 2p3=2) with a small separation energy (Sn & 0:8 MeV), instead of being predominantly in the 1f7=2 orbital as expected from the conventional shell ordering. These findings suggest that 31Ne is the heaviest halo system known.
Type de document :
Article dans une revue
Liste complète des métadonnées

http://hal.in2p3.fr/in2p3-00443978
Contributeur : Sandrine Guesnon <>
Soumis le : mardi 5 janvier 2010 - 13:12:41
Dernière modification le : mardi 19 février 2019 - 11:13:18

Identifiants

Citation

T. Nakamura, N. Kobayashi, Y. Kondo, Y. Satou, N. Aoi, et al.. Halo Structure of the Island of Inversion Nucleus 31Ne. Physical Review Letters, American Physical Society, 2009, 103, pp.262501. ⟨10.1103/PhysRevLett.103.262501⟩. ⟨in2p3-00443978⟩

Partager

Métriques

Consultations de la notice

220