Abstract
The present paper reports on a further study of the prefusion proton emission from the $^{12}\mathrm{C}$+$^{12}\mathrm{C}$ system, observed for some low-lying and low-spin states in $^{23}\mathrm{Na}$. Excitation functions for the $^{12}\mathrm{C}(^{12}\mathrm{C}, p)^{23}\mathrm{Na}$ reaction leading to low excited states in $^{23}\mathrm{Na}$ are reported for energy regions from 29.0 to 31.0 MeV (lab) in 100 keV steps and from 34.8 to 36.8 MeV (lab) in 200 keV steps. No correlated structure in these excitation functions has been found; however, angular distributions measured at 12.0, 22.8, 25.4, and 35.8 MeV (lab) show new evidence for the nonstatistical process. The observed features are qualitatively explained within the framework of the prefusion model.NUCLEAR REACTIONS $^{12}\mathrm{C}(^{12}\mathrm{C}, p)^{23}\mathrm{Na}$, $E=12.0, 22.8, 25.4, 29.0\ensuremath{-}31.0, 34.8\ensuremath{-}36.8$ MeV; measured $\ensuremath{\sigma}(E; \ensuremath{\theta})$. Prefusion emission.
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