Doubletlike Intermediate Resonances in ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$(${}_{}{}^{12}{}_{}{}^{}\mathrm{C}$, ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}$) ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$ *($3^{-}$, 6.13 MeV)

The doubletlike structures observed at $E_{\mathrm{c}.\mathrm{m}.\mathrm{}}\simeq 20 \mathrm{and} 22$ MeV in the ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$(${}_{}{}^{12}{}_{}{}^{}\mathrm{C}$, ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}$) ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$*($3^{-}$, 6.13 MeV) excitation function are simply reproduced by the coupled-channels method. The lower and higher members of the "doublets" are interpreted as the resonances enhanced in the subchannels of ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}$-${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$($3^{-}$) with $J=L+3\mathrm{}$ and with $J^{\prime }=L+1\mathrm{}$, respectively. The splitting of the "doublet" is mainly attributed to the $J(J+1\mathrm{})\mathrm{}$ dependence of the potential adiabatically distorted by the coupling interaction between ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}$ and ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$.