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Investigation of Coulomb dipole polarization effects on reactions involving exotic nuclei

 

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Opened Access Investigation of Coulomb dipole polarization effects on reactions involving exotic nuclei
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Author: Fernández García, Juan Pablo
González Álvarez, Marcos Aurelio
Chamon, L. C.
Department: Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear
Date: 2015
Published in: Physical Review C - Nuclear Physics, 92 (1), 014604-.
Document type: Article
Abstract: We have analyzed elastic scattering angular distributions and total reaction cross sections of the exotic nuclei Li9,11 on Pb208, at energies below and above the Coulomb barrier. For this purpose, we have used an optical potential with no adjustable parameters, composed by the nuclear São Paulo potential, derived from the nonlocal nature of the interaction, and the Coulomb dipole polarization potential, derived from the semiclassical theory of Coulomb excitation. Within this formalism, we identified an unusual long-range absorption for the Li11+Pb208 system, which is dominated by the Coulomb interaction. We compare it to the absorption mechanisms observed for He6+Pb208 which, unlike those of Li11+Pb208, take place at small interacting distances, where both Coulomb and nuclear interactions are important. The proposed approach shows to be a fundamental basis to study reactions involving exotic nuclei.
Cite: Fernández García, J.P., Alvarez, M.A.G. y Chamon, L.C. (2015). Investigation of Coulomb dipole polarization effects on reactions involving exotic nuclei. Physical Review C - Nuclear Physics, 92 (1), 014604-.
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URI: http://hdl.handle.net/11441/65301

DOI: 10.1103/PhysRevC.92.014604

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