Density determinations in heavy ion collisions

Abstract

The experimental determination of freeze-out temperatures and densities from the yields of light elements emitted in heavy ion collisions is discussed. Results from different experimental approaches are compared with those of model calculations carried out with and without the inclusion of medium effects. Medium effects become of relevance for baryon densities above $\approx 5\times 10^{-4}$ fm${}^{-3}$. A quantum statistical (QS) model incorporating medium effects is in good agreement with the experimentally derived results at higher densities. A densitometer based on calculated chemical equilibrium constants is proposed.

5 pages, 3 figures

References in corpus (16)

• Composition and thermodynamics of nuclear matter with light clusters
• Hadron production in central nucleus-nucleus collisions at chemical freeze-out
• Comparison of Chemical Freeze-Out Criteria in Heavy-Ion Collisions
• Statistical Model for a Complete Supernova Equation of State
• Cluster Formation and The Virial Equation of State of Low-Density Nuclear Matter
• Light nuclei quasiparticle energy shift in hot and dense nuclear matter
• Experimental determination of the symmetry energy of a low density nuclear gas
• Laboratory Tests of Low Density Astrophysical Equations of State
• Parametrization of light nuclei quasiparticle energy shifts and composition of warm and dense nuclear matter
• Cnstructing the phase diagram of finite neutral nuclear matter
• Density and Temperature of Fermions from Quantum Fluctuations
• Experimental Determination of In-Medium Cluster Binding Energies and Mott Points in Nuclear Matter
• The Nuclear Matter Symmetry Energy at $0.03\le \rho /{\rho }_0\le 0.2$
• Density and Temperature of Bosons from Quantum Fluctuations
• Effect of medium dependent binding energies on inferring the temperatures and freeze-out density of disassembling hot nuclear matter from cluster yields
• Validity of the Hadronic Freeze-Out Curve

Cited by in corpus (14)

• The many facets of the (non relativistic) Nuclear Equation of State
• Constraining supernova equations of state with equilibrium constants from heavy-ion collisions
• The equation of state and symmetry energy of low density nuclear matter
• Signals of Bose Einstein condensation and Fermi quenching in the decay of hot nuclear systems
• Low density nuclear matter with light clusters in a generalized nonlinear relativistic mean-field model
• Heavy-ion Collisions: Direct and indirect probes of the density and temperature dependence of Esym
• Coulomb corrections to density and temperature in heavy ion collisions
• Critical Scaling of Two-component Systems from Quantum Fluctuations
• Pairing effects on spinodal decomposition of asymmetric nuclear matter
• Competition between fermions and bosons in nuclear matter at low densities and finite temperatures
• Cold dilute nuclear matter with $\alpha$-particle condensation in a generalized nonlinear relativistic mean-field model
• Density and Temperature in Heavy Ion Collisions: A Test of Classical and Quantum Approaches
• Nuclear clustering process in heavy-ion collisions : experimental constraints on the low-temperature region of the QCD phase diagram
• Thermalization of Nuclear Matter in Heavy-Ion Collisions at Fermi-Energies