Shell Model Study of the Neutron-Rich Nuclei around N=28
Abstract
We describe the properties of the neutron rich nuclei around N=28 in the shell mode framework. The valence space comprises the sd shell for protons an the pf shell for neutrons without any restriction. Good agreement is found with the available experimental data. The N=28 shell closure, even if eroded due to the large neutron excess, persists. The calculations predict that 40S and 42S are deformed with β=0.29 and β=0.32 respectively.
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