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Density fluctuations in intermediate-energy heavy-ion collisions 认领 引用 被引量：6
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作者 Cong Liu Xian-Gai Deng Yu-Gang Ma 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2022年第5期1-7,共7页
Within the framework of the isospin-dependent quantum molecular dynamics model,we simulate129Xe+119Sn collisions in an incident energy range of 20 to 190MeVucleon and discuss the liquid-gas phase transition with... Within the framework of the isospin-dependent quantum molecular dynamics model,we simulate129Xe+119Sn collisions in an incident energy range of 20 to 190MeVucleon and discuss the liquid-gas phase transition with density fluctuations.For comparison,we also extract the effective Fisher parameter τeff,multiplicity of intermediate-mass fragments(IMFs),and information entropy.It is found that the Fisher parameter and maximum information entropy of collisions have peak values at Ebeam=50-80 MeVucleon.In addition,the maximum multiplicity of IMFs has a plateau around 70 MeVucleon.For higher-order density moments in a larger central region of[-5,5]3 fm3 in the collision system,a maximum plateau also appears as function of beam energy at energies exceeding 70 MeVucleon.These observables,which are consistent with each other,indicate a liquid-gas phase transition around 70 MeVucleon for the129Xe+119Sn system. 展开更多
关键词 Heavy-ioncollisions Liquid-gasphase transition IQMD Density moment Intermediatemass fragment Informationentropy Fisher-lawparameter
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