Angular distributions of transitions to low-lying states in ${}_{}{}^{20}{}_{}{}^{}\mathrm{Ne}$ have been measured for the reaction ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}({}_{}{}^{12}{}_{}{}^{}\mathrm{C},\alpha )$ in 62.5-keV steps for $6.5<~E_{\mathrm{c}.\mathrm{m}.\mathrm{}}<11\mathrm{}$ MeV. Two new nonstatistical structures are identified at $E_{\mathrm{c}.\mathrm{m}.\mathrm{}}=7.71\mathrm{} \mathrm{and} 9.84$ MeV, with $J^{\pi }=4^{+} \mathrm{and} 8^{+}$, respectively. These observations support the quasimolecular interpretations of the low-energy structure in the ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}$-${}_{}{}^{12}{}_{}{}^{}\mathrm{C}$ interaction.

• Received 3 June 1976

DOI:https://doi.org/10.1103/PhysRevLett.37.670