Abstract
Proton inelastic scattering on the neutron-rich nucleus Mg32 has been studied at 46.5 MeV/nucleon in inverse kinematics. Populated states were identified by measuring de-excitation γ rays, in which five new states were found by γ−γ coincidence analyses. By analyzing the angular differential cross sections via coupled-channel calculations, their spins and parities were constrained and the amplitudes for each transition were extracted. The spin and parity of the 2321-keV state was assigned as 41+. The ratio between the energies of the 21+ and 41+ states indicates that Mg32 is a transitional nucleus rather than an axially deformed rigid rotor. The collectivities in the nucleus Mg32 with N=20 are discussed based on the results obtained in the present experiment.4 MoreReceived 15 April 2009DOI:https://doi.org/10.1103/PhysRevC.79.054319©2009 American Physical Society
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