[Paper] g factor of the ⁴⁴Cl ground state: Probing the reduced Z=16 and N=28 gaps

g factor of the ⁴⁴Cl ground state: Probing the reduced Z=16 and N=28 gaps

M. De Rydt, J.M. Daugas, F. de Oliveira Santos, L. Gaudefroy, S. Grévy, D. Kameda, V. Kumar, R. Lozeva, T.J. Mertzimekis, P. Morel, T. Nagatomo, G. Neyens, L. Perrot, O. Sorlin, C. Stödel, J.C. Thomas, N. Vermeulen, and P. Vingerhoets

doi: 10.1103/PhysRevC.81.034308

The g factor of the ⁴⁴Cl ground state is measured at the LISE fragment separator at the Grand Accélérateur National d’Ions Lourds (GANIL) using the β nuclear magnetic resonance technique, resulting in g(⁴⁴Cl)=(-)0.2749(2). An analysis of the g factor value and of the theoretical level scheme in the shell-model framework reveals the presence of odd-proton s_1/2 configurations and neutron excitation across the N=28 shell gap in the ground state of ⁴⁴Cl. In addition, the measured g factor strongly supports a 2^- spin assignment for the ⁴⁴Cl ground state.