Intermediate structures and their dominantlvalues inO16(C12,Be8)Ne20reactions,Ec.m.=11.5 to 18.6MeV

Measurements of $\sigma (\theta , E)$ are reported for ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$(${}_{}{}^{12}{}_{}{}^{}\mathrm{C}$,${}_{}{}^8{}_{}{}^{}\mathrm{Be}$)${}_{}{}^{20}{}_{}{}^{}\mathrm{Ne}$* reactions to the low lying $0^{+}$, $2^{+}$, $4^{+}$ and unresolved $3^{-}$, $1^{-}$ final states. The energy range is $E_{\mathrm{c}.\mathrm{m}.\mathrm{}}\simeq 11.5 \mathrm{to} 18.6$ MeV with measurements at ∼ 86 keV intervals. Up to 38 angles between ${\theta }_{\mathrm{c}.\mathrm{m}.\mathrm{}}=12\mathrm{}° \mathrm{and} 167°$ are measured for each energy. A large number of resonances are identified by their appearance over a broad range of forward and backward angles and by their energy correlation over exit channels. Many $J^{\pi }$ assignments are inferred from the behavior of back angle $\sigma \left(\theta \right)$ across the resonance. All $J$ values are from one to three units less than the optical model grazing angular momentum for the ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$+${}_{}{}^{12}{}_{}{}^{}\mathrm{C}$ channel.