Weak Imaginary potential Effect on the 18,19,20O + 12C Fusion Reactions at Low Energies

Abstract

We analysed the fusion cross sections of 18,19,20O + 12C systems at energies near and belowCoulomb barrier within the optical model. To make compherensive analysis, we have usedthree different density distributions of 18,19,20O nuclei. Also, we apply two different theoreticalapproaches which consist of semi-microscopic and fully microscopic double folding potentials.Our results are in good agreement with the experimental data and we showed that the weakimaginary potential is very important in explaining the fusion cross section of 18,19,20O+ 12Csystems.</p