Isospin Transport at Fermi Energies

Abstract

In this paper we investigate isospin transport mechanisms in semi-peripheral collisions at Fermi energies. The effects of the formation of a low density region (neck) between the two reaction partners and of pre-equilibrium emission on the dynamics of isospin equilibration are carefully analyzed. We clearly identify two main contributions to the isospin transport: isospin diffusion due to the $N/Z$ ratio and isospin drift due to the density gradients. Both effects are sensitive to the symmetry part of the nuclear Equation of State (EOS), in particular to the value and slope around saturation density.

arXiv comment6 pages, 6 figures, revtex4-twocolumns

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Cited by in corpus (35)

• Recent Progress and New Challenges in Isospin Physics with Heavy-Ion Reactions
• Probing the Nuclear Symmetry Energy with Heavy Ion Collisions
• Isospin Diffusion and Equilibration for Sn+Sn collisions at E/A=35 MeV
• Correlations between emission timescale of fragments and isospin dynamics in ${}^{124}$Sn+${}^{64}$Ni and ${}^{112}$Sn+${}^{58}$Ni reactions at 35 AMeV
• Influence of Transport Variables on Isospin Transport Ratios
• Isospin Dynamics in Peripheral Heavy Ion Collisions at Fermi Energies
• Experimental effects on dynamics and thermodynamics in nuclear reactions on the symmetry energy as seen by the CHIMERA 4$\pi$ detector
• Experimental investigation of the residues produced in the 136Xe+Pb and 124Xe+Pb fragmentation reactions at 1 A GeV
• Connecting the nuclear EoS to the interplay between fusion and quasifission processes in low-energy nuclear reactions
• IMF isotopic properties in semi-peripheral collisions at Fermi energies
• Probing the density dependence of symmetry energy via multifragmentation at sub-saturation densities
• Neutron to proton ratios of quasiprojectile and midrapidity emission in the ${}^{64}$Zn + ${}^{64}$Zn reaction at 45 MeV/nucleon
• Isospin diffusion in semi-peripheral ${}^{58}Ni$ + ${}^{197}Au$ collisions at intermediate energies (II): Dynamical simulations
• Evidence for the role of proton shell closure in quasi-fission reactions from X-ray fluorescence of mass-identified fragments
• Isospin Dynamics in Heavy Ion Collisions: from Coulomb Barrier to Quark Gluon Plasma
• Isospin diffusion measurement from the direct detection of a Quasi-Projectile remnant
• Sensitivity of neutron to proton ratio toward the high density behavior of symmetry energy in heavy-ion collisions
• Neutron-proton effective mass splitting in neutron-rich matter and its impacts on nuclear reactions
• First results from the INDRA-FAZIA apparatus on isospin diffusion in ${}^{58,64}$Ni+${}^{58,64}$Ni systems at Fermi energies
• Dynamical fission of the quasiprojectile and isospin equilibration for the system 80Kr+ 48 Ca at 35 MeV/nucleon
• Isospin equilibration in multinucleon transfer reaction at near-barrier energies
• Isospin effects and symmetry energy studies with INDRA
• Theoretical predictions of experimental observables sensitive to the symmetry energy: Results of the SMF transport model
• Influence of fast emissions and statistical de-excitation on the isospin transport ratio
• Heavy-ion Collisions: Direct and indirect probes of the density and temperature dependence of Esym
• Isospin Dynamics in Heavy Ion Collisions: EoS-sensitive Observables
• Experimental determination of the quasi-projectile mass with measured neutrons
• Experimental study of the isospin transport with 40,48 Ca+ 40,48 Ca reactions at 35 MeV/nucleon
• Experimental study of the ${}^{40,48}$Ca+ ${}^{40,48}$Ca reactions at 35 MeV/nucleon
• Nuclear Matter and Nuclear Dynamics
• Constraining the Symmetry Energy: A Journey in the Isospin Physics from Coulomb Barrier to Deconfinement
• Isospin compositions of correlated sources in the Fermi energy domain
• The Dynamical Dipole Radiation in Dissipative Collisions with Exotic Beams
• Revisiting the isospin relaxation time in intermediate-energy heavy-ion collisions
• Revisit to the yield ratio of triton and ${}^3$He as an indicator of neutron-rich neck emission