摘要Anisotropic flows per nucleon (v1/A, v2/A, v3/A and v4/A) of light fragments up to the mass number 4 as a function of transverse momentum per nucleon are studied for 55MeV/nucleon 58Fe+58Fe and 58Ni+58Ni at large impact parameters by the isospin-dependent quantum molecular dynamics model. The effects of symmetry energy and nucleon-nucleon cross sections, which are both isospin-dependent on anisotropic flows, are studied in detail. In comparison of the two systems with or without symmetry potential term, the results show that the strength of flows is sensitive to symmetry potential and nucleon-nucleon cross sections, which mainly cause a repulsion effect in this energy region.
Abstract：Anisotropic flows per nucleon (v1/A, v2/A, v3/A and v4/A) of light fragments up to the mass number 4 as a function of transverse momentum per nucleon are studied for 55MeV/nucleon 58Fe+58Fe and 58Ni+58Ni at large impact parameters by the isospin-dependent quantum molecular dynamics model. The effects of symmetry energy and nucleon-nucleon cross sections, which are both isospin-dependent on anisotropic flows, are studied in detail. In comparison of the two systems with or without symmetry potential term, the results show that the strength of flows is sensitive to symmetry potential and nucleon-nucleon cross sections, which mainly cause a repulsion effect in this energy region.
YAN Ting-Zhi;HU Si-Ke;GUO Wen-Xue;WANG Sheng-Long;XU Jin-Ping. Isospin Effects on Anisotropic Flows in Intermediate Energy Heavy Ion Collisions[J]. 中国物理快报, 2009, 26(11): 112501-112501.
YAN Ting-Zhi, HU Si-Ke, GUO Wen-Xue, WANG Sheng-Long, XU Jin-Ping. Isospin Effects on Anisotropic Flows in Intermediate Energy Heavy Ion Collisions. Chin. Phys. Lett., 2009, 26(11): 112501-112501.
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