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

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

Oct, 2010

10 pages

Published in:

Phys.Rev.Lett. 105 (2010) 252501

e-Print:

1010.3999 [nucl-ex]

DOI:

10.1103/PhysRevLett.105.252501

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Abstract: (arXiv)

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.

29.38.-c
27.30.+t
21.10.Hw
25.55.Hp

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