Observable effects of symmetry energy in heavy-ion collisions at RIA energies

Abstract

Within an isospin-dependent transport model for nuclear reactions induced by neutron-rich nuclei, we perform a comparative study of ${}^{100}Sn{+}^{124}Sn$ and ${}^{100}Zn{+}^{124}Sn$ reactions at beam energies of 30 MeV/A and 400 MeV/A to identify optimal experimental conditions and observables for investigating the equation of state (EOS) of neutron-rich matter at RIA. Several observables known to be sensitive to the density-dependence of the symmetry energy are examined as a function of impact parameter for both reaction systems. In particular, the strength of isospin transport/diffusion is studied by using rapidity distributions of free nucleons and their isospin asymmetries. An approximate isospin equilibrium is established even for peripheral collisions with a very soft symmetry energy at 30 MeV/A. At 400 MeV/A, however, a strong isospin translucency is observed even in most central collisions with either soft or stiff symmetry energies. Origins of these observations and their implications to determining the EOS of neutron-rich matter at the Rare Isotope Accelerator (RIA) are discussed.

References in corpus (11)

• Determination of the Equation of State of Dense Matter
• Momentum dependence of symmetry potential in asymmetric nuclear matter for transport model calculations
• Momentum dependence of the symmetry potential and nuclear reactions induced by neutron-rich nuclei at RIA
• Light cluster production in intermediate energy heavy-ion collisions induced by neutron-rich nuclei
• Spinodal decomposition of low-density asymmetric nuclear matter
• High Density Behaviour of Nuclear Symmetry Energy and High Energy Heavy-Ion Collisions
• Light clusters production as a probe to the nuclear symmetry energy
• Effect of symmetry energy on two-nucleon correlation functions in heavy-ion collisions induced by neutron-rich nuclei
• Relativistic effects in the search for high density symmetry energy
• Isospin effects on two-nucleon correlation functions in heavy-ion collisions at intermediate energies
• Isospin-Dependence of ${\pi }^{-}/{\pi }^{+}$ Ratio and Density-Dependence of Nuclear Symmetry Energy

Cited by in corpus (25)

• Recent Progress and New Challenges in Isospin Physics with Heavy-Ion Reactions
• Determination of the stiffness of the nuclear symmetry energy from isospin diffusion
• Nuclear matter symmetry energy and the neutron skin thickness of heavy nuclei
• Production of deuterium, tritium, and ${}^3$He in central Pb+Pb collisions at 20A, 30A, 40A, 80A, and 158A GeV at the CERN SPS
• Isospin Diffusion in Heavy-Ion Collisions and the Neutron Skin Thickness of Lead
• Effects of momentum-dependent nuclear potential on two-nucleon correlation functions and light cluster production in intermediate energy heavy-ion collisions
• Sensitivity of the transverse flow towards symmetry energy
• Single and double pi^{-}/pi^{+} ratios in heavy-ion reactions as probes of the high-density behavior of the nuclear symmetry energy
• Probing isospin- and momentum-dependent nuclear effective interactions in neutron-rich matter
• Probing the isospin dependence of the in-medium nucleon-nucleon cross sections with radioactive beams
• Double neutron-proton differential transverse flow as a probe for the high-density behavior of the nuclear symmetry energy
• Neutron to proton ratios of quasiprojectile and midrapidity emission in the ${}^{64}$Zn + ${}^{64}$Zn reaction at 45 MeV/nucleon
• Stopping and Isospin Equilibration in Heavy Ion Collisions
• Probing the Nuclear Symmetry Energy with Heavy-Ion Reactions Induced by Neutron-Rich Nuclei
• The neutron/proton ratio of squeezed-out nucleons and the high density behavior of the nuclear symmetry energy
• Spin-orbit and tensor interactions in homogeneous matter of nucleons: accuracy of modern many-body theories
• Isospin dependence of nucleon emission and radial flow in heavy-ion collisions induced by high energy radioactive beams
• Sensitivity of neutron to proton ratio toward the high density behavior of symmetry energy in heavy-ion collisions
• The influence of the symmetry energy on the cone-azimuthal emission
• Nuclear Incompressibility in Asymmetric Systems at Finite Temperature and Entropy
• Nuclear matter symmetry energy from generalized polarizabilities: dependences on momentum, isospin, density and temperature
• Determining the density dependence of the nuclear symmetry energy using heavy-ion reactions
• Beam energy dependence of the relativistic retardation effects of electrical fields on the ${\pi }^{-}/{\pi }^{+}$ ratio in heavy-ion collisions
• Constraining the Skyrme effective interactions and the neutron skin thickness of nuclei using isospin diffusion data from heavy ion collisions
• Elimination of influence of neutron-skin size difference of initial colliding nuclei in Pb+Pb collisions