Título:
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Symmetry energy of warm nuclear systems
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Autor/a:
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Agrawal, B. K.; De, J. N.; Samaddar, S. K.; Centelles Aixalà, Mario; Viñas Gausí, Xavier
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Otros autores:
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Universitat de Barcelona |
Abstract:
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The temperature dependence of the symmetry energy and symmetry free energy coefficients of infinite nuclear matter and of finite nuclei is investigated. For infinite matter, both these coefficients are found to have a weaker dependence on temperature at densities close to saturation; at low but homogeneous densities, the temperature dependence becomes stronger. For finite systems, different definitions of symmetry energy coefficients are encountered in the literature yielding different values. A resolution to this problem is suggested from a global liquid-drop-inspired fit of the energies and free energies of a host of nuclei covering the entire periodic table. The hot nucleus is modeled in a subtracted finite-temperature-Thomas-Fermi framework, with dynamical surface phonon coupling to nucleonic motion plugged in. Contrary to infinite nuclear matter, a substantial change in the symmetry energy coefficients is observed for finite nuclei with temperature. |
Materia(s):
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-Física nuclear -Hadrons -Partícules (Física nuclear) -Fusió nuclear -Nuclear physics -Hadrons -Particles (Nuclear physics) -Nuclear fusion |
Derechos:
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(c) Società Italiana di Fisica & Springer Verlag, 2014
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Tipo de documento:
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Artículo Artículo - Versión aceptada |
Editor:
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Società Italiana di Fisica & Springer Verlag
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