Elsevier

Nuclear Physics A

Volume 723, Issues 1–2, 28 July 2003, Pages 93-103
Nuclear Physics A

A parameter-free optical potential for the heavy-ion elastic scattering process

https://doi.org/10.1016/S0375-9474(03)01158-8Get rights and content

Abstract

Thirty elastic scattering angular distributions for seven heavy-ion systems, in wide energy ranges, have been studied with the aim of systematizing the optical potential, real and imaginary parts, in a global way. The framework is: (i) an extensive systematization of nuclear densities, (ii) the energy dependence of the bare potential accounted by a model based on the nonlocal nature of the interaction, and (iii) the real and imaginary parts of the optical potential assumed to have the same radial shape.

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      Within the context of the systematic for the densities, the SPP has no adjustable parameter. An extension of the model for the imaginary part of the optical potential was proposed in [7]. It was found that, for many systems and energies, experimental angular distributions are well described by OM calculations, in which the SPP is assumed for the real part of the OP, while the imaginary part is assumed to be proportional to the SPP normalized by a factor of about 0.8.

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    This work was partially supported by Financiadora de Estudos e Projetos (FINEP), Conselho Nacional de Desenvolvimento Cientı́fico e Tecnológico (CNPq) and Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP), under contract number 1998/11401-4.

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