Spectroscopy At The N=20 Shell Closure: The Beta-Decay Of Mg-32

The shell closure N=20 has been studied by beta-decay spectroscopy experiment performed at the GANIL facility. The experimental setup is described and first results on the beta-decay of Mg-32 are presented. The extracted level scheme of Al-32 is compared to Shell Model calculations and discussed in the light of the structural changes observed for the nuclei of the so-called island of inversion. Finally, neutron time-of-flight spectrum from the beta-delayed neutron decay of Mg-32 is presented.