  In this work we measured elastic and inelastic angular distributions of the
weakly bound 9Be projectile on the 197Au target at several bombarding energies
from 84% up to 140% of the Coulomb barrier. The elastic angular distributions
were analyzed using a phenomenological Woods-Saxon potential and a double
folding Sao Paulo potential and the energy dependence was extracted. Angular
distributions from two inelastic peaks were compared with coupled channel
calculations using reduced transition probabilities available in the
literature. The energy dependence of the two interaction potential models show
a similar trend in the region of the Coulomb barrier. Dispersion relation
calculation demonstrates the presence of the breakup threshold anomaly proposed
for weakly bound systems.
