Discovery of the Shape Coexisting 0+ State in Mg32 by a Two Neutron Transfer Reaction
Abstract
The “island of inversion” nucleus Mg32 has been studied by a (t, p) two neutron transfer reaction in inverse kinematics at REX-ISOLDE. The shape coexistent excited 0+ state in Mg32 has been identified by the characteristic angular distribution of the protons of the ΔL=0 transfer. The excitation energy of 1058 keV is much lower than predicted by any theoretical model. The low γ-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.
- Publication:
-
Physical Review Letters
- Pub Date:
- December 2010
- DOI:
- arXiv:
- arXiv:1010.3999
- Bibcode:
- 2010PhRvL.105y2501W
- Keywords:
-
- 25.55.Hp;
- 21.10.Hw;
- 27.30.+t;
- 29.38.-c;
- Transfer reactions;
- Spin parity and isobaric spin;
- 20<
- =A<
- =38;
- Radioactive beams;
- Nuclear Experiment
- E-Print:
- Phys. Rev. Lett. accepted for publication http://prl.aps.org