Deformed intruder bands in ${}^{113}\mathrm{Sn}$

High-spin states in the odd-$A{\hspace{0.5em}}^{113}\mathrm{Sn}$ nucleus have been investigated with the ${}^{100}\mathrm{Mo}{(}^{18}\mathrm{O},\hspace{0.5em}5n)$ reaction at 94 MeV using the Chalk River $8\pi$ array. Three decoupled $(\Delta I=2)$ rotational bands extending to spins $I$ in the range $(63/2\mathrm{}–69/2)ħ$ have been identified and connected to known low-lying states. Experimental observations for the most extended band have been interpreted as evidence for smooth band termination. Theoretical calculations performed within a configuration-dependent shell-correction approach suggest that all three bands are built upon deformed two-particle–two-hole proton excitations across the $Z=50\mathrm{}$ shell gap.