The $2_1^{+}$ and $2_2^{+}$ states of the neutron-rich isotope ${}^{80}\mathrm{Ge}$ were studied by intermediate-energy heavy-ion scattering, providing for the first time the experimental value of $B(E2;2_2^{+}\to 0_{\mathrm{g}.\mathrm{s}.}^{+})$ for ${}^{80}\mathrm{Ge}$. The experimental data are well reproduced by large-scale shell model calculations, which suggest the important role of the proton particle-hole $2p_{3/2}\text{−}1f_{5/2}$ excitation in the configuration of the $2_2^{+}$ state.

• Received 25 December 2006

DOI:https://doi.org/10.1103/PhysRevC.78.021304