Effects of sequential decay on collective flows and nuclear stopping power in heavy-ion collisions at intermediate energies

Abstract

In this study, the rapidity distribution, collective flows, and nuclear stopping power in ${}^{197}\mathrm{Au}{+}^{197}\mathrm{Au}$ collisions at intermediate energies were investigated using the ultrarelativistic quantum molecular dynamics (UrQMD) model with GEMINI++ code. The UrQMD model was adopted to simulate the dynamic evolution of heavy-ion collisions, whereas the GEMINI++ code was used to simulate the decay of primary fragments produced by UrQMD. The calculated results were compared with the INDRA and FOPI experimental data. It was found that the rapidity distribution, collective flows, and nuclear stopping power were affected to a certain extent by the decay of primary fragments, especially at lower beam energies. Furthermore, the experimental data of the collective flows and nuclear stopping power at the investigated beam energies were better reproduced when the sequential decay effect was included.

9 pages, 8 figures, accepted by Nucl.Sci.Tech

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• Bayesian inference of nuclear incompressibility from collective flow in mid-central Au+Au collisions at 400--1500 MeV/nucleon
• Information entropy for central ${}^{197}$Au+${}^{197}$Au collisions with the ultrarelativistic quantum molecular dynamics model
• Activation of momentum fluctuations in wave packet molecular dynamics: Impacts on momentum distributions of projectilelike fragments
• Branching ratio and information entropy for the p+${}^{12}$C reaction in the extended-quantum-molecular-dynamics model
• A novel filtering method for generating desired density profiles of colliding nuclei