Breakup of ${}^9$Be on ${}^{209}$Bi above and near the Coulomb barrier as a molecular single-particle effect: its influence on complete fusion and scattering

The breakup of the ${}^9$Be projectile on the ${}^{209}$Bi target at bombarding energies above and near the Coulomb barrier is studied in the adiabatic two-center shell model approach. The effect of ${}^9$Be$$n$+2\alpha$ breakup channel on complete fusion, elastic and inelastic cross sections is investigated. Results show that the breakup of the projectile ${}^9$Be could be due to a molecular single-particle effect shortly before the colliding nuclei reach the Coulomb barrier.