Symmetry energy from fragment observables in the canonical thermodynamic model
arXiv:0910.3460 · doi:10.1103/PhysRevC.80.054606
Abstract
Different formulas relying measurable fragment isotopic observables to the symmetry energy of excited nuclei have been proposed and applied to the analysis of heavy ion collision data in the recent literature. In this paper we examine the quality of the different expressions in the framework of the McGill Canonical Thermodynamic Model. We show that even in the idealized situation of canonical equilibrium and in the absence of secondary decay, these formulas do not give a precise reconstruction of the symmetry energy of the fragmenting source. However, both isotopic widths and isoscaling appear very well correlated to the physical symmetry energy.
Submitted to Physical Review C
References in corpus (27)
- Recent Progress and New Challenges in Isospin Physics with Heavy-Ion Reactions
- Neutron-Rich Nuclei in Heaven and Earth
- Constraints on the density dependence of the symmetry energy
- Symmetry Energy I: Semi-Infinite Matter
- The Giant Dipole Resonance as a quantitative constraint on the symmetry energy
- Isotopic dependence of the giant monopole resonance in the even-A ^{112-124}Sn isotopes and the asymmetry term in nuclear incompressibility
- Light nuclei quasiparticle energy shift in hot and dense nuclear matter
- Experimental determination of the symmetry energy of a low density nuclear gas
- Isospin Dependence of Incomplete Fusion Reactions at 25 Mev/a
- The Neutron Star Crust: Nuclear Physics Input
- Isospin Dynamics in Peripheral Heavy Ion Collisions at Fermi Energies
- Evolution of the symmetry energy of hot neutron-rich matter formed in heavy-ion reactions
- Isospin Distillation with Radial Flow: a Test of the Nuclear Symmetry Energy
- Isoscaling as a measure of Symmetry Energy in the Lattice Gas Model
- Isospin fractionation : equilibrium versus spinodal decomposition
- Charge Exchange Spin-Dipole Excitations of 90Zr and 208Pb and Neutron Matter Equation of State
- Isospin Dynamics in Heavy Ion Collisions: from Coulomb Barrier to Quark Gluon Plasma
- Isospin dependent thermodynamics of fragmentation
- Relevance of equilibrium in multifragmentation
- Multifragmentation and the symmetry term of the nuclear equation of state
- Density dependence of symmetry free energy of hot nuclei
- Isoscaling, Symmetry Energy and Thermodynamic Models
- Generalized Gibbs ensembles for time dependent processes
- The role of bulk energy in nuclear multifragmentation
- Statistical analysis of a dynamical multifragmentation path
- Searching for statistical equilibrium in a dynamical multifragmentation path
- Comparison of Statistical Multifragmentation Model simulations with Canonical Thermodynamical Model results: a few representative cases