Abstract
Elastic scattering of the weakly bound $^{9}\mathrm{Be}$ on $^{27}\mathrm{Al}$ was measured at near barrier energies. The optical model data analysis with the real and imaginary parts of a global double-folding potential does not show strong evidence of the usual threshold anomaly. The same result was obtained by using a Woods-Saxon shape optical potential and calculating the potential strengths at the strong absorption radius. The reason for this behavior may be explained by the presence of break-up and∕or transfer channels at low energies.
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