Radial Expansion Flow in Reactions of 40Ca+58Fe and 40Ca+58Ni

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MING Zhao-Yu, ZHANG Feng-Shou, CHEN Lie-Wen and ZHU Zhi-Yuan. Radial Expansion Flow in Reactions of 40Ca+58Fe and 40Ca+58Ni[J]. Chinese Physics C, 2001, 25(6): 549-554.
MING Zhao-Yu, ZHANG Feng-Shou, CHEN Lie-Wen and ZHU Zhi-Yuan. Radial Expansion Flow in Reactions of 40Ca+58Fe and 40Ca+58Ni[J]. Chinese Physics C, 2001, 25(6): 549-554. shu
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Received: 2000-05-22
Revised: 1900-01-01
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Radial Expansion Flow in Reactions of 40Ca+58Fe and 40Ca+58Ni

    Corresponding author: MING Zhao-Yu,
  • Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator, Lanzhou 730000, China2 Institute of Modern Physics, The Chinese Academy of Sciences, Lanzhou 730000, China3 Shanghai Institute of Nuclear Research, The Chinese Academy of Sciences, Shanghai 201800, China4 CCAST World Laboratory, Beijing 100080, China

Abstract: By means of using an isospin-dependent Boltzmann-Langevin equation which includes isospin-dependent symmetry energy, Coulomb energy, isospin-dependent nucleon-nucleon cross sections, Pauli blocking, and initialization, the radial expansion flow of reaction systems 40Ca+58Ni and 40Ca+58Fe at 53, 100, 150, and 200 MeV/u in the central collisions were studied. It has shown that the more neutron rich system exhibits smaller radial expansion flow. It was found that the neutron rich system had smaller threshold energy which may provide a new method to determine the isospin dependent nuclear equation of state from calculated result and linear fitting result.

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