Elsevier

Nuclear Physics A

Volume 620, Issue 1, 30 June 1997, Pages 91-113
Nuclear Physics A

The 12C+24Mg elastic scattering: An example of anomalous transparency at coulomb barrier energies☆

https://doi.org/10.1016/S0375-9474(97)00157-7Get rights and content

Abstract

Fifteen complete angular distributions of the elastic scattering of 12C+24Mg were measured at energies around the Coulomb barrier (Ecm = 10.67–16 MeV). The angular distributions are strongly oscillating and could be well described by an optical potential family, whose real part was determined without continuous ambiguity. The imaginary part of this optical potential is very shallow. At four energies the inelastic scattering angular distributions leading to the 2+ state of the 24Mg were also measured and analysed with coupled-channels calculations. The volume integrals of the optical potentials used in the coupled-channels calculations present the threshold anomaly in their energy dependence, with a clear Q-value dependence.

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    ☆

    Research financed by FAPESP, CNPq and CAPES.

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