Elliptic flow in heavy ion collisions near the balance energy
Elliptic flow in heavy ion collisions near the balance energy
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DOI：
10.1103/physrevlett.83.2534
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发表时间：
1999-06
影响因子：
8.6
通讯作者：
Yu-Ming Zheng;C. Ko;Bao-An Li;Binghamton University;A. University
中科院分区：
文献类型：
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作者：
Yu-Ming Zheng;C. Ko;Bao-An Li;Binghamton University;A. University
在同位旋依赖性输运模型中，研究了能量为 30 至 100thinspthinspMeV/核子时 {sup 48}Ca 与 {sup 48}Ca 碰撞中的质子椭圆流。随着入射能量的增加，椭圆流显示出从正流到负流的转变。它的大小取决于核状态方程（EOS）和核子-核子散射截面。对于具有自由核子-核子横截面的刚性 EOS 和具有减小的核子-核子横截面的软 EOS，获得了不同的椭圆流，尽管两者都会导致在相同平衡能量下面内横向流消失。 {版权} {ital 1999} {ital 美国物理学会}
The proton elliptic flow in collisions of {sup 48}Ca on {sup 48}Ca at energies from 30 to 100thinspthinspMeV/nucleon is studied in an isospin-dependent transport model. With increasing incident energy, the elliptic flow shows a transition from positive to negative flow. Its magnitude depends on both the nuclear equation of state (EOS) and the nucleon-nucleon scattering cross section. Different elliptic flows are obtained for a stiff EOS with free nucleon-nucleon cross sections and a soft EOS with reduced nucleon-nucleon cross sections, although both lead to vanishing in-plane transverse flow at the same balance energy. {copyright} {ital 1999} {ital The American Physical Society}