States inCd106populated by heavy-ion (xn) reactions interpreted by a two-quasiparticle-plusrotor model

Levels in ${}_{}{}^{106}{}_{}{}^{}\mathrm{Cd}$ were studied using (heavy-ion, $\mathrm{xn}\gamma$) reactions. The experiments included $\gamma$-ray yields as a function of bombarding energy, $\gamma$-ray angular distributions, $\gamma$-ray linear polarizations, and $\gamma -\gamma$ coincidence measurements. The decay scheme, which includes 85 $\gamma$-ray transitions, is similar to those reported for ${}_{}{}^{108}{}_{}{}^{}\mathrm{Cd}$ and ${}_{}{}^{102,104,106}{}_{}{}^{}\mathrm{Pd}$. In addition to the ground-state band, there appear two negative-parity collective bands built on two quasineutron states. The yrast positive-parity states appear dominated by intruder states at $8^{+}$, 3044.23 keV (two-quasiproton), ${10}^{+}$, 4435.08 keV (two-quasineutron), and ${12}^{+}$, 4659.81 keV (four-quasiparticle). The results are compared to calculations from a two-quasiparticle plus slightly deformed rotor model which utilizes a variable moment of inertia.