Resumo

CAMACHO, A.G. et al. The threshold anomaly from the simultaneous calculation of elastic scattering and fusion cross sections for the systems ⁹Be+¹⁴⁴Sm and ⁹Be+⁶⁴ Zn for energies around the barrier. Rev. mex. fis. [online]. 2008, vol.54, suppl.3, pp.56-62. ISSN 0035-001X.

The energy dependence of the optical potential is used to study the threshold anomaly for reactions with the weakly bound projectile ⁹Be on ¹⁴⁴Sm and ⁶⁴Zn for energies around the Coulomb barrier. The energy dependent potential parameters are obtained from a simultaneous X² -analysis of elastic scattering and fusion data. There are signatures that in fact, the so-called breakup threshold anomaly shows up for these systems. This findin is in agreement with other calculations involving weakly bound projectiles.

Palavras-chave : Nuclear reactions; weakly bound nuclei; threshold anomaly.

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