Statistical analyses involving deviation functions, channel cross correlations, and the number of maxima method were applied to the ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}({}_{}{}^{12}{}_{}{}^{}\mathrm{C}, \alpha )$ reaction in the energy range 7.4-15 MeV. They show that the structures found in the angle integrated excitation functions are not consistent with a pure statistical reaction mechanism.

NUCLEAR REACTIONS Statistical analysis of the reaction ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}({}_{}{}^{12}{}_{}{}^{}\mathrm{C}, \alpha )$, $E=7.4-15\mathrm{}$ MeV; existence of nonstatistical features deduced.

• Received 21 February 1980

DOI:https://doi.org/10.1103/PhysRevC.22.515