Isocaling and the Symmetry Energy in the Multifragmentation Regime of Heavy Ion Collisions

Abstract

The ratio of the symmetry energy coefficient to temperature, $a_{s}ym/T$, in Fermi energy heavy ion collisions, has been experimentally extracted as a function of the fragment atomic number using isoscaling parameters and the variance of the isotope distributions. The extracted values have been compared to the results of calculations made with an Antisymmetrized Molecular Dynamics (AMD) model employing a statistical decay code to account for deexcitation of excited primary fragments. The experimental values are in good agreement with the values calculated but are significantly different from those characterizing the yields of the primary AMD fragments.

12 pages, 6 figures

References in corpus (12)

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• Isospin fractionation and isoscaling in dynamical nuclear collisions
• Isoscaling in Light-Ion Induced Reactions and its Statistical Interpretation
• Experimental determination of the symmetry energy of a low density nuclear gas
• Characteristics of the fragments produced in central collisions of 129Xe+ natSn from 32 to 50 AMeV
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• Reaction Dynamics and Multifragmentation in Fermi Energy Heavy Ion Reactions
• Symmetry energy for fragmentation in dynamical nuclear collisions
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• The Quantum Nature of a Nuclear Phase Transition
• Short timescale behavior of colliding heavy nuclei at intermediate energies
• Geometrical aspects of isoscaling

Cited by in corpus (17)

• Unified Description of Nuclear Stopping in Central Heavy-ion Collision from 10$A$ MeV to 1.2$A$ GeV
• Constraining the Symmetry Term in the Nuclear Equation of State at Sub-Saturation Densities and Finite Temperatures
• Critical behavior of the isotope yield distributions in the Multifragmentation Regime of Heavy Ion Reactions
• Probing the density dependence of symmetry energy via multifragmentation at sub-saturation densities
• Isobaric Yield Ratio Difference in Heavy-ion Collisions, and Comparison to Isoscaling
• A novel determination of density, temperature and symmetry energy for nuclear multi-fragmentation through primary fragment yield reconstruction
• Neutron Density Distributions of Neutron-Rich Nuclei Studied with the Isobaric Yield Ratio Difference
• Primary Isotope Yields and Characteristic Properties of the Fragmenting Source in Heavy-ion Reactions near the Fermi Energies
• Experimental reconstruction of primary hot isotopes and characteristic properties of the fragmenting source in the heavy ion reactions near the Fermi energy
• Symmetry energy from nuclear multifragmentation
• Chemical Property of Colliding Sources in 124,136Xe and 112,124Sn Induced Collisions in Isobaric Ratio Difference and Isoscaling Methods
• Analysis of fragment yield ratios in the nuclear phase transition
• Effect of neutron skin thickness on projectile fragmentation
• Dipolar degrees of freedom and Isospin equilibration processes in Heavy Ion collisions
• Reconstructed primary fragments and symmetry energy, temperature and density of the fragmenting source in ${}^{64}$Zn + ${}^{112}$Sn at 40 MeV/nucleon
• Residue Coulomb interaction among isobars and its influence in symmetry energy of neutron-rich fragment
• Reexamining the "finite-size" effects in isobaric yield ratios using a statistical abrasion-ablation model