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

作　　者：Kui Xiao Peng-Cheng Li Yong-Jia Wang Fu-Hu Liu Qing-Feng Li 

机构地区：[1]State Key Laboratory of Quantum Optics and Quantum Optics Devices and Collaborative Innovation Center of Extreme Optics,Institute of Theoretical Physics,Shanxi University,Taiyuan 030006,China [2]School of Science,Huzhou University,Huzhou 313000,China [3]School of Nuclear Science and Technology,Lanzhou University,Lanzhou 730000,China [4]Institut für Theoretische Physik,Goethe Universität Frankfurt,Frankfurt am Main 60438,Germany [5]Institute of Modern Physics,Chinese Academy of Science,Lanzhou 730000,China

出　　处：《Nuclear Science and Techniques》2023年第4期175-184,共10页核技术（英文）

基　　金：partly supported by the National Natural Science Foundation of China (Nos. U2032145 and 11875125);the National Key Research and Development Program of China (No. 2020YFE0202002)。

摘　　要：In this study, the rapidity distribution, collective flows, and nuclear stopping power in ^(197)Au+^(197)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.

关 键 词：Heavy-ion collisions Sequential decay effect Collective flow Nuclear stopping power 

分 类 号：O571.6[理学—粒子物理与原子核物理]