$Q$-value dependence of inelastic scattering and multinucleon transfer reactions ${}_{}{}^{27}{}_{}{}^{}\mathrm{Al}$ + ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$ at 88 MeV: Optimum $Q$ values and $Q$-value dependence of angular distributions of reaction products

${}_{}{}^{27}{}_{}{}^{}\mathrm{Al}({}_{}{}^{16}{}_{}{}^{}\mathrm{O},X)$ reactions are studied at 88 MeV. The $A$ and $Z$ of reaction products $X={}_{}{}^{16}{}_{}{}^{}\mathrm{O},{}_{}{}^{15,14,13}{}_{}{}^{}\mathrm{N},{}_{}{}^{13,12}{}_{}{}^{}\mathrm{C},{}_{}{}^{11,10}{}_{}{}^{}\mathrm{B},{}_{}{}^{9,7}{}_{}{}^{}\mathrm{Be} \mathrm{and} {}_{}{}^{7,6}{}_{}{}^{}\mathrm{Li}$ are identified. Despite the low bombarding energy, the general features of (i) energy spectra, (ii) the optimum $Q$ values $Q_{\mathrm{eff}}^m$ and (iii) angular distributions in 5 MeV intervals in $Q$ are very similar to those of much higher energy data of heavier systems: i.e., (i) dominance of deep inelastic reactions, (ii) $Q_{\mathrm{eff}}^m$ values well reproduced by the "universal" relations previously found for deep inelastic reactions, and (iii) $\sigma (\theta ,Q)$ of a form $\frac{A\exp [-\mu \mathrm{}(Q\left)\mathrm{}\theta \right]}{sin\theta }$. The variations of $Q_{\mathrm{eff}}^m$ with $\theta$ and of $\mu$ with $Q$ and $n$, the number of transferred nucleons, are discussed in connection with the gradual evolution in reaction mechanisms from quasielastic to deep inelastic to complete fusion.

NUCLEAR REACTIONS ${}_{}{}^{27}{}_{}{}^{}\mathrm{Al}({}_{}{}^{16}{}_{}{}^{}\mathrm{O},X)$, $E=88\mathrm{}$ MeV, $X={}_{}{}^{16}{}_{}{}^{}\mathrm{O},{}_{}{}^{15,14,13}{}_{}{}^{}\mathrm{N},{}_{}{}^{13,12}{}_{}{}^{}\mathrm{C},{}_{}{}^{11,10}{}_{}{}^{}\mathrm{B},{}_{}{}^{9,7}{}_{}{}^{}\mathrm{Be} \mathrm{and} {}_{}{}^{7,6}{}_{}{}^{}\mathrm{Li}$, measured energy spectra, optimum $Q$ values, $\sigma$, $\sigma \left(\theta \right)$, and $\sigma (\theta ,Q)$.