Isobaric yield ratios in heavy-ion reactions, and symmetry energy of neutron-rich nuclei at intermediate energies

Abstract

The isobaric yield ratios of the fragments produced in the neutron-rich 48Ca and 64Ni projectile fragmentation are analyzed in the framework of a modified Fisher model. The correlations between the isobaric yield ratios (R) and the energy coefficients in the Weiszäcker-Beth semiclassical mass formula (the symmetry-energy term asym, the Coulomb-energy term ac, and the pairing-energy term ap) and the difference between the chemical potentials of the neutron and proton (μn-μp) are investigated. Simple correlations between (μn-μp)/T, ac/T, asym/T, and ap/T (where T is the temperature), and lnR are obtained. It is suggested that (μn-μp)/T, ac/T, asym/T, and ap/T of neutron-rich nuclei can be extracted using isobaric yield ratios for heavy-ion collisions at intermediate energies.

arXiv comment12 pages, 6 figures

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• Nuclear symmetry energy and the role of three-body forces
• Finite size effects in isobaric ratios
• Neutron-skin effects in isobaric yield ratio for mirror nuclei in statistical abrasion-ablation model
• Neutron Density Distributions of Neutron-Rich Nuclei Studied with the Isobaric Yield Ratio Difference
• 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
• A Scaling Phenomenon in Shannon Information Uncertainty Difference of fragments in Heavy-ion Collisions
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• Improved Thermometer from Intermediate Mass Fragments in Heavy-Ion Collisions with Isobaric Yield Ratio Difference
• 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
• Correlation and isospin dynamics of participant-spectator matter in neutron-rich colliding nuclei at 50 MeV/nucleon
• Statistical approach of nuclear multifragmentation with realistic nuclear equation of state
• Pairing-energy coefficients of neutron-rich fragments in spallation reactions
• Correlation between nuclear temperatures and symmetry energy in sub-saturation