Spinodal decomposition of low-density asymmetric nuclear matter

Details Spinodal decomposition of low-density asymmetric nuclear matter Spinodal decomposition of low-density asymmetric nuclear matter

2007-05-09

arxiv.org/abs/0705.1291v1

Nucl.Phys.A632:287-303,1998

Physics

Nuclear Physics

Nuclear Theory

10 pages, 10 figures

Scientific paper

10.1016/S0375-9474(98)00006-2

We investigate the dynamical properties of asymmetric nuclear matter at low density. The occurrence of new instabilities, that lead the system to a dynamical fragment formation, is illustrated, discussing in particular the charge symmetry dependence of the structure of the most important unstable modes. We observe that instabilities are reduced by charge asymmetry, leading to larger size and time scales in the fragmentation process. Configurations with less asymmetric fragments surrounded by a more asymmetric gas are favoured. Interesting variances with respect to a pure thermodynamical prediction are revealed, that can be checked experimentally. All these features are deeply related to the structure of the symmetry term in the nuclear Equation of State (EOS) and could be used to extract information on the low density part of the EOS.

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