Effects of sequential decay on collective flows and nuclear stopping power in heavy-ion collisions at intermediate energies
Effects of sequential decay on collective flows and nuclear stopping power in heavy-ion collisions at intermediate energies
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DOI：
10.1007/s41365-023-01205-3
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发表时间：
2023-04
影响因子：
2.8
通讯作者：
Kui Xiao;Pengrui Li;Yong-Jia Wang;Fu-Hu Liu;Qingfeng Li
中科院分区：
文献类型：
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作者：
Kui Xiao;Pengrui Li;Yong-Jia Wang;Fu-Hu Liu;Qingfeng Li
本研究采用超相对论量子分子动力学（UrQMD）模型和GEMINI++程序，研究了中能Au +Au碰撞的快度分布、集体流和核阻止本领.采用UrQMD模型模拟重离子碰撞的动态演化，采用GEMINI++程序模拟UrQMD产生的初级碎片的衰变。将计算结果与INFIGURE和FOPI的实验数据进行了比较。结果表明，初级碎片的衰变对快度分布、集体流和核阻止本领都有一定的影响，特别是在较低束流能量下。此外，当考虑序列衰变效应时，在所研究的束流能量下的集体流和核阻止本领的实验数据得到了更好的再现。
In this study, the rapidity distribution, collective flows, and nuclear stopping power inAu+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.