The ground state g factor of $44Cl$ : a probe for the reduced gaps at $Z = 16$ and $N = 28$ Available to Purchase

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 $s1/2$ configurations and neutron excitation across the $N = 28$ shell gap in the $44Cl$ ground state. In addition, the measured g factor strongly supports a $2−$ spin assignment for the $44Cl$ ground state.