Effect of isospin dependent cluster recognition on the observables in heavy ion collisions

Abstract

We introduce isospin dependence in the cluster recognition algorithms used in the Quantum Molecular Dynamics model to describe fragment formation in heavy ion collisions. This change reduces the yields of emitted nucleons and enhances the yields of fragments, especially heavier fragments. The enhancement of neutron-rich lighter fragments mainly occurs at mid-rapidity. Consequently, isospin dependent observables, such as isotope distributions, yield ratios of $n/p$, $t{/}^{3}He$, and isoscaling parameters are affected. We also investigate how equilibration in heavy ion collisions is affected by this change.

12 pages, 5 figures, 1 table, submitted to PRC rapid commu

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Cited by in corpus (22)

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• Collective flows of light particles in the Au+Au collision at intermediate energies
• Covariance Analysis of Symmetry Energy Observables from Heavy Ion Collision
• Effects of in-medium nucleon-nucleon cross section on collective flow and nuclear stopping in heavy-ion collisions in the Fermi-energy domain
• ${}^3$H/${}^3$He ratio as a probe of the nuclear symmetry energy at sub-saturation densities
• Low density nuclear matter with light clusters in a generalized nonlinear relativistic mean-field model
• Investigation of collective radial expansion and stopping in heavy ion collisions at Fermi energies
• Rapidity distribution of protons from the potential version of UrQMD model and the traditional coalescence afterburner
• Observing the Ping-pong Modality of Isospin Degree of Freedom in Cluster Emission from Heavy Ion Reactions
• Competition between Coulomb and Symmetry Potential in Semi-peripheral Heavy-ion Collisions
• Elliptic flow in heavy-ion collisions at intermediate energy: the role of impact parameter, mean field potential, and collision term
• The cumulants of the baryon number from central Au+Au collision at $E_{lab}$= 1.23 GeV$/$nucleon reveal the nuclear mean-field potentials
• Mechanism of production of light complex particles in nucleon-induced reactions
• Cold dilute nuclear matter with $\alpha$-particle condensation in a generalized nonlinear relativistic mean-field model
• Correlation and isospin dynamics of participant-spectator matter in neutron-rich colliding nuclei at 50 MeV/nucleon
• Revisit to the yield ratio of triton and ${}^3$He as an indicator of neutron-rich neck emission
• Beam energy dependence of cumulants of the net-baryon, net-charge and deuteron multiplicity distributions in Au+Au collisions at $\sqrt{s_{NN}}=3.0-5.0$ GeV
• Revisiting an extended-mean-field approach in heavy-ion collisions around the Fermi energy
• Isovector giant dipole resonance mode with an improved propagation approach in the framework of EQMD model