# Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2018, Vol. 29 ›› Issue (12): 177

• Special Section on International Workshop on Nuclear Dynamics in Heavy-Ion Reaction (IWND2018) •

### Collective flow and nuclear stopping in heavy ion collisions in Fermi energy domain

Peng-Cheng Li 1,2 • Yong-Jia Wang 2 • Qing-Feng Li 2,3 • Hong-Fei Zhang 1,3

1. 1 School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China
2 School of Science, Huzhou University, Huzhou 313000, China
3 Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
• Received:2018-08-31 Revised:2018-10-08 Accepted:2018-10-09
• Contact: Yong-Jia Wang E-mail:wangyongjia@zjhu.edu.cn
• Supported by:

This work was supported by the National Natural Science Foundation of China (Nos. 11875125, 11747312, 11675066, and 11505057) and the Zhejiang Provincial Natural Science Foundation of China (No. LY18A050002).

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Peng-Cheng Li, Yong-Jia Wang, Qing-Feng Li, Hong-Fei Zhang. Collective flow and nuclear stopping in heavy ion collisions in Fermi energy domain.Nuclear Science and Techniques, 2018, 29(12): 177
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Abstract:

The effects of the in-medium nucleon–nucleon (NN) elastic cross section on the observables in heavy ion collisions in the Fermi energy domain are investigated within the framework of the ultrarelativistic quantum molecular dynamics model. The results simulated using medium correction factors of F =\$σ^{in-medium}_{NN} /σ^{free}_{NN} = 0.2; 0.3; 0.5; and the density- and momentum-dependent factor obtained from the FU3FP1 parametrization are compared with the FOPI and INDRA experimental data. It is found that the calculations using the correction factors F = 0.2 and 0.5 reproduce the experimental data (i.e., collective flow and nuclear stopping) at 40 and 150 MeV/ nucleon, respectively. Calculations with the FU3FP1 parametrization can best fit these experimental data. These conclusions can be confirmed in both 197Au +197 Au and 129Xe +120 Sn.