Ground-state electric quadrupole moment of 31Al

Details Ground-state electric quadrupole moment of 31Al Ground-state electric quadrupole moment of 31Al

2008-10-16

arxiv.org/abs/0810.2879v1

Phys.Rev.C79:027301,2009

Physics

Nuclear Physics

Nuclear Experiment

5 pages

Scientific paper

10.1103/PhysRevC.79.027301

Ground-state electric quadrupole moment of 31Al (I =5/2+, T_1/2 = 644(25) ms) has been measured by means of the beta-NMR spectroscopy using a spin-polarized 31Al beam produced in the projectile fragmentation reaction. The obtained Q moment, |Q_exp(31Al)| = 112(32)emb, are in agreement with conventional shell model calculations within the sd valence space. Previous result on the magnetic moment also supports the validity of the sd model in this isotope, and thus it is concluded that 31Al is located outside of the island of inversion.

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