Neutron skin and signature of the $N$ = 14 shell gap found from measured proton radii of ${}^{17-22}$N

S. Bagchi, R. Kanungo, W. Horiuchi +37

A thick neutron skin emerges from the first determination of root mean square radii of the proton distributions for ${}^{17-22}$N from charge changing cross section measurements arou…