\begin{document}$ _{-8}^{+24} $\end{document} mb at Ec.m.=11.1 MeV, supporting the direct α transfer reaction mechanism. The 12C(12C,3α)12C reaction channel was studied for the first time using an exclusive measurement. Our result does not confirm the anomaly behavior reported in the previous inclusive measurement by Kolata et al. [Phys. Rev. C 21, 579 (1980)]. Our comparisons with statistical model calculations suggest that the 3α channel is dominated by the fusion evaporation process at Ec.m. > 19 MeV. The additional contribution of the 3α channel increases the fusion reaction cross section by 10% at energies above 20 MeV. We also find that an additional reaction mechanism is needed to explain the measured cross section at Ec.m. < 15 MeV at which point the statistical model prediction vanishes."> Studies of the 2<i>α</i> and 3<i>α</i> channels of the <sup>12</sup>C+<sup>12</sup>C reaction in the range of <i>E</i><sub>c.m.</sub>=8.9 MeV to 21 MeV using the active target Time Projection Chamber -
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