Discovery of the shape coexisting 0+ state in 32Mg by a two neutron transfer reaction

Details Discovery of the shape coexisting 0+ state in 32Mg by a two neutron transfer reaction Discovery of the shape coexisting 0+ state in 32Mg by a two neutron transfer reaction

2010-10-19

arxiv.org/abs/1010.3999v1

Phys.Rev.Lett.105:252501,2010

Physics

Nuclear Physics

Nuclear Experiment

Phys. Rev. Lett. accepted for publication http://prl.aps.org

Scientific paper

10.1103/PhysRevLett.105.252501

The Island of Inversion nucleus 32Mg has been studied by a (t,p) two neutron transfer reaction in inverse kinematics at REX-ISOLDE. The shape coexistent excited 0+ state in 32Mg has been identified by the characteristic angular distribution of the protons of the DeltaL = 0 transfer. The excitation energy of 1058 keV is much lower than predicted by any theoretical model. The low gamma-ray intensity observed for the decay of this 0+ state indicates a lifetime of more than 10 ns. Deduced spectroscopic amplitudes are compared with occupation numbers from shell model calculations.

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