Differential cross section of the inelastic scattering of a 54 MeV/nucleon ${}^{26}\mathrm{Ne}$ beam on a lead target has been measured by detecting the deexcitation γ-rays. Analysis of the first $2^{+}$ state angular distribution of the inelastically scattered nuclei shows that the process cannot be considered as a pure Coulomb excitation, and nuclear contribution must be taken into account. The charge deformation deduced, ${\beta }_2^C=0.392\pm 0.024$, corresponds to a $B(E2)=141\pm 18e^2{\mathrm{fm}}^2$ in agreement with a $N=16$ subshell closure.

• Received 14 February 2007

DOI:https://doi.org/10.1103/PhysRevC.75.057306