Effect of Symmetry Potential on Entropy in Intermediate Energy Heavy Ion Reactions

WANG Kuo; GUO Wenjun; ZHANG Xiaoji

doi:10.11804/NuclPhysRev.33.03.258

Based on the isospin-dependent quantum molecular dynamics model,effects of the symmetry potential,incident beam energy and different symmetry energy strength coefficients on the entropy of reaction system are studied.The results show that the symmetry potential affects the entropy,and the effect changes with the neutron-proton ratio of the reaction system.Besides,in ⁴⁰Ca+⁴⁰Ca and ⁴⁰Si+⁴⁰Sireaction systems,the symmetry energy strength coefficient also has effect on the entropy when the symmetry energy strength coefficient c=32 MeV,the effect on the entropy is largest for the two systems.Therefore the form and size of symmetry potential could be obtained by comparison of the model calculation and the experiments on the measurement of entropy.

Effect of Symmetry Potential on Entropy in Intermediate Energy Heavy Ion Reactions

University of Shanghai for Science and Technology, Shanghai 200093, China

Funds: National Natural Science Foundation of China(10905041)

Received Date: 2016-03-25

Rev Recd Date: 2016-05-10

Publish Date: 2016-09-20

Key words:

intermediate energy heavy ion collision /
entropy /
symmetry potential

Abstract: Based on the isospin-dependent quantum molecular dynamics model,effects of the symmetry potential,incident beam energy and different symmetry energy strength coefficients on the entropy of reaction system are studied.The results show that the symmetry potential affects the entropy,and the effect changes with the neutron-proton ratio of the reaction system.Besides,in ⁴⁰Ca+⁴⁰Ca and ⁴⁰Si+⁴⁰Sireaction systems,the symmetry energy strength coefficient also has effect on the entropy when the symmetry energy strength coefficient c=32 MeV,the effect on the entropy is largest for the two systems.Therefore the form and size of symmetry potential could be obtained by comparison of the model calculation and the experiments on the measurement of entropy.

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Effect of Symmetry Potential on Entropy in Intermediate Energy Heavy Ion Reactions

doi: 10.11804/NuclPhysRev.33.03.258

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