Isospin effects and symmetry energy studies with INDRA

Abstract

The equation of state of asymmetric nuclear matter is still controversial, as predictions at subsaturation as well as above normal density widely diverge. We discuss several experimental results measured in heavy-ion collisions with the INDRA array in the incident energy range 5-80 MeV/nucleon. In particular an estimate of the density dependence of the symmetry energy is derived from isospin diffusion results compared with a transport code: the potential part of the symmetry energy linearly increases with the density. We demonstrate that isospin equilibrium is reached in mid-central collisions for the two reactions Ni+Au at 52 MeV/nucleon and Xe+Sn at 32 MeV/nucleon. New possible variables and an improved modelization to investigate symmetry energy are discussed.

Review for the special issue of EPJA on symmetry energy. 20 pages, 16 figures

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Cited by in corpus (10)

• Equations of state for supernovae and compact stars
• Collision dynamics at medium and relativistic energies
• Improving isotopic identification with \emph{INDRA} Silicon-CsI(\emph{Tl}) telescopes
• Inhomogeneity growth in two-component fermionic systems
• Dipolar degrees of freedom and Isospin equilibration processes in Heavy Ion collisions
• Experimental study of the isospin transport with 40,48 Ca+ 40,48 Ca reactions at 35 MeV/nucleon
• Reaction and fusion cross sections for the near-symmetric system ${}^{129}Xe{+}^{nat}Sn$ from $8$ to $35$ $AMeV$
• Isospin compositions of correlated sources in the Fermi energy domain
• Cluster formation in nuclear reactions from mean-field inhomogeneities
• Origins and Impacts of High-Density Symmetry Energy