Systematic study of isoscaling behavior in projectile fragmentation by the statistical abrasion-ablation model

Abstract

The isospin effect and isoscaling behavior in projectile fragmentation have been systematically investigated by a modified statistical abrasion-ablation (SAA) model. The normalized peak differences and reduced isoscaling parameters are found to decrease with ($Z_{proj}-Z$)/$Z_{proj}$ or the excitation energy per nucleon and have no significant dependence on the size of reaction systems. Assuming a Fermi-gas behavior, the excitation energy dependence of the symmetry energy coefficients are tentatively extracted from $\alpha$ and $\beta$ which looks consistent with the experimental data. It is pointed out that the reduced isoscaling parameters can be used as an observable to study excitation extent of system and asymmetric nuclear equation of state in heavy ion collisions.

10 pages, 6 figures

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Cited by in corpus (11)

• Isobaric yield ratios in heavy-ion reactions, and symmetry energy of neutron-rich nuclei at intermediate energies
• 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
• Influence of statistical sequential decay on isoscaling and symmetry energy coefficient in a GEMINI simulation
• Neutron Density Distributions of Neutron-Rich Nuclei Studied with the Isobaric Yield Ratio Difference
• Neutron removal cross section as a measure of neutron skin
• Chemical Property of Colliding Sources in 124,136Xe and 112,124Sn Induced Collisions in Isobaric Ratio Difference and Isoscaling Methods
• Isobaric yield ratio difference between the 140 $A$ MeV ${}^{58,64}$Ni + ${}^9$Be reactions studied by antisymmetric molecular dynamics model
• Isoscaling behavior in ${}^{48,40}$Ca+${}^9$Be collisions at intermediate energy investigated by HIPSE model
• Reexamining the "finite-size" effects in isobaric yield ratios using a statistical abrasion-ablation model
• Density dependence of the "symmetry energy" in the lattice gas model