High-spin states inSn114

The single-closed-shell nucleus ${}_{}{}^{114}{}_{}{}^{}\mathrm{Sn}$ was studied using the ${}_{}{}^{100}{}_{}{}^{}\mathrm{Mo}$ ${(}^{18}$O,4n) reaction. High-spin deformed states in ${}_{}{}^{114}{}_{}{}^{}\mathrm{Sn}$ were observed up to the (${22}^{+}$) state, and the backbending phenomenon was found. Constancy in the moment of inertia for the high-spin states was observed. The calculation based on the spin-projection Hartree-Bogoliubov model reproduces well the experimental data. The backbending phenomenon in ${}_{}{}^{114}{}_{}{}^{}\mathrm{Sn}$ is explained as due to the band crossing between the intruder g band and the intruder aligned (ν$h_{11/2}$ ${)}^2$ band.