High-spin states in ${}^{112}\mathrm{Sn}$ were investigated using the ${}^{103}\mathrm{Rh}({}^{12}\mathrm{C}, 1p2n$) reaction at a beam energy of 62 MeV. Six electric dipole $E1$ transitions linking positive- and negative-parity intruder bands have been identified in ${}_{50}{}^{112}\mathrm{Sn}$ through $\gamma$-ray spectroscopy. The experimental reduced $E1$ transition probabilities $B\left(E1\right)$, derived from level lifetimes by means of the Doppler-shift attenuation method, are of the order of ${10}^{-4}$ W.u., which gives evidence for the octupole correlation in ${}^{112}\mathrm{Sn}$. The systematics of the reduced $E1$ transition probabilities and neutron energy levels of $5/2^{+}$ and $11/2^{-}$ in Xe isotopes suggest an enhanced octupole correlation at neutron number $N=62$, which is supported by the relativistic Hartree-Bogoliubov calculations.

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• Collective levels
• Electromagnetic transitions
• High spin states
• Lifetimes & widths
• Nuclear density functional theory
• Nuclear structure & decays
• 90 ≤ A ≤ 149
• Spectrometers & spectroscopic techniques