EPJ

2023 Impact factor 2.6
EPJ A - Hadrons and Nuclei
Hadrons and Nuclei
Eur. Phys. J. A 15, 399-404 (2002)
DOI: 10.1140/epja/i2002-10043-7

Directed and elliptic flows in $\chem{^{40}Ca + {}^{40}Ca}$ and $\chem{^{112}Sn + {}^{112}Sn}$ collisions

H.Y. Zhang1, W.Q. Shen1, 2, Y.G. Ma1, X.Z. Cai1, D.Q. Fang1, L.P. Yu1, C. Zhong1 and Y.B. Wei1

1  Shanghai Institute of Nuclear Research, Chinese Academy of Sciences, Shanghai 201800, PRC
2  College of Sciences, Ningbo University, Ningbo 315211, PRC

Zhanghy@sinr.ac.cn

(Received: 15 March 2002 / Revised version: 11 June 2002 / Published online: 19 November 2002)

Abstract
The directed and elliptic flows for different light particles and fragments in collisions of $\chem{{}^{40}Ca}$ + $\chem{{}^{40}Ca}$ and $\chem{{}^{112}Sn}$ + $\chem{{}^{112}Sn}$ at energies from 30 MeV/nucleon to 100 MeV/nucleon were studied in the isospin-dependent quantum molecule dynamics model (IQMD). With increasing incident energy, the directed flow rises from negative to positive, while the elliptic flow decreases with increasing the incident energies. The directed flow for the $\chem{{}^{40}Ca}$ + $\chem{{}^{40}Ca}$ system is not sensitive to the nuclear equation of states (EOS), but the directed flow for the $\chem{{}^{112}Sn}$ + $\chem{{}^{112}Sn}$ system is sensitive to the EOS. However, the elliptic flows for both $\chem{{}^{40}Ca}$ + $\chem{{}^{40}Ca}$ and $\chem{{}^{112}Sn}$ + $\chem{{}^{112}Sn}$ systems are not sensitive to EOS. A study of the dependence of directed and elliptic flows on the fragment charge (mass) is also performed.

PACS
25.75.-q - Relativistic heavy-ion collisions.
24.10.Lx - Monte Carlo simulations (including hadron and parton cascades and string breaking models).
25.70.-z - Low and intermediate energy heavy-ion reactions.

© Società Italiana di Fisica, Springer-Verlag 2002

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