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

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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 \({\mathcal{F}}=\sigma ^{\mathrm{in-medium}}_\mathrm{NN}/ \sigma ^{\mathrm{free}}_\mathrm{NN}=0.2,~0.3,~0.5,\) 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 \({\mathcal{F}} =\) 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 \(^{197}\text{Au}+^{197}\text{Au}\) and \(^{129}\text{Xe}+^{120}\text{Sn}\).

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Authors and Affiliations

  1. School of Nuclear Science and Technology, Lanzhou University, Lanzhou, 730000, China

    Peng-Cheng Li & Hong-Fei Zhang

  2. School of Science, Huzhou University, Huzhou, 313000, China

    Peng-Cheng Li, Yong-Jia Wang & Qing-Feng Li

  3. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, China

    Qing-Feng Li & Hong-Fei Zhang

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Correspondence to Yong-Jia Wang or Qing-Feng Li.

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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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Li, PC., Wang, YJ., Li, QF. et al. Collective flow and nuclear stopping in heavy ion collisions in Fermi energy domain. NUCL SCI TECH 29, 177 (2018). https://doi.org/10.1007/s41365-018-0510-1

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