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Dynamical polarization potential due to the excitation of collective states

 

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Opened Access Dynamical polarization potential due to the excitation of collective states
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Author: Andrés Martín, María Victoria
Catara, F.
Lanza, Edoardo G.
Department: Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear
Date: 1991
Document type: Article
Abstract: Within the Feshbach formalism we calculate the nucleus-nucleus dynamical polarization potential arising from the coupling of the elastic channel to the collective vibrational states, described by the random-phase approximation. Calculations for the systems O16+40Ca and Ca40+40Ca show the importance of the high-lying states. They give the main contribution to the real part of the polarization potential at every incident energy, while they dominate the imaginary part only at very high energy. At low energy the absorption is given by the low-lying states. The real and imaginary parts of the potential are shown to obey a dispersion relation. Calculations of elastic cross section give a good description of the experimental data.
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URI: http://hdl.handle.net/11441/60419

DOI: http://dx.doi.org/10.1103/PhysRevC.44.2709

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