Effect of Symmetry Energy in Reaction Ca+Ca at Intermediate Energies

AN Rong; YAN Shiwei

doi:10.11804/NuclPhysRev.32.03.259

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AN Rong, YAN Shiwei, . Effect of Symmetry Energy in Reaction Ca+Ca at Intermediate Energies[J]. Nuclear Physics Review, 2015, 32(3): 259-266. doi: 10.11804/NuclPhysRev.32.03.259

Citation:

AN Rong, YAN Shiwei, . Effect of Symmetry Energy in Reaction Ca+Ca at Intermediate Energies[J]. Nuclear Physics Review, 2015, 32(3): 259-266. doi: 10.11804/NuclPhysRev.32.03.259

Effect of Symmetry Energy in Reaction Ca+Ca at Intermediate Energies

doi: 10.11804/NuclPhysRev.32.03.259

AN Rong¹,
YAN Shiwei^1、2、3,

College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, China;
Beijing Radiation Center, Beijing 100875, China;

Received Date: 1900-01-01
Rev Recd Date: 1900-01-01
Publish Date: 2015-09-20

Abstract

A two-step model for combining the dynamical and statistical decay processes in heavy-ion collisions is used to reproduce the experimental results of the INDRA Collaborations on 40Ca+40Ca and 48Ca+48Ca reactions at 35 AMeV. We obtain the isoscaling parameters α(Z) and β(N) of isotopic distributions of the fragments, the reduced symmetry energy coefficient ζ(Z) and its dependence on the symmetry energy strength coefficient Cs in the mean field. Our results suggest that Isoscaling parameters strongly depend on the degree of neutron-rich. With the increasing atomic number, ζ(Z) represents a smoothly flat tendency during the dynamical process but shows the increasing tendency after decay, and such results are independent on the selected reaction systems. The effect of symmetry energy shows evidently in the isotopic distributions of fragments after statistical decay process.
- heavy ion collision,
- multifragmentation,
- reduced symmetry energy coefficient
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通讯作者: 陈斌, bchen63@163.com

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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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Effect of Symmetry Energy in Reaction Ca+Ca at Intermediate Energies

doi: 10.11804/NuclPhysRev.32.03.259

AN Rong¹,
YAN Shiwei^1、2、3,

College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, China;

Beijing Radiation Center, Beijing 100875, China;

Received Date: 1900-01-01
Rev Recd Date: 1900-01-01
Publish Date: 2015-09-20

Key words:

Abstract: A two-step model for combining the dynamical and statistical decay processes in heavy-ion collisions is used to reproduce the experimental results of the INDRA Collaborations on 40Ca+40Ca and 48Ca+48Ca reactions at 35 AMeV. We obtain the isoscaling parameters α(Z) and β(N) of isotopic distributions of the fragments, the reduced symmetry energy coefficient ζ(Z) and its dependence on the symmetry energy strength coefficient Cs in the mean field. Our results suggest that Isoscaling parameters strongly depend on the degree of neutron-rich. With the increasing atomic number, ζ(Z) represents a smoothly flat tendency during the dynamical process but shows the increasing tendency after decay, and such results are independent on the selected reaction systems. The effect of symmetry energy shows evidently in the isotopic distributions of fragments after statistical decay process.

AN Rong, YAN Shiwei, . Effect of Symmetry Energy in Reaction Ca+Ca at Intermediate Energies[J]. Nuclear Physics Review, 2015, 32(3): 259-266. doi: 10.11804/NuclPhysRev.32.03.259

Citation:

AN Rong, YAN Shiwei, . Effect of Symmetry Energy in Reaction Ca+Ca at Intermediate Energies[J]. Nuclear Physics Review, 2015, 32(3): 259-266. doi: 10.11804/NuclPhysRev.32.03.259