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非对心重离子碰撞中 ,横向非对称核物质流的存在引起了末态的多粒子方位角关联 .对 6 0 0AMeVAu+Au碰撞的QMD模拟数据分析表明 ,不同事件中侧向流与椭圆流在横向上的夹角存在明显的涨落 ,多粒子方位角关联揭示了相互作用区域核物质运动的空间 -动量相关性 .椭圆流对碰撞系统的演化过程反映敏感 ,在中间快度区域 ,不同事件中椭圆流的差别与反应过程中粒子经历再散射的情况有关
In non-ICH collisions, the presence of transverse asymmetric nuclear material flow causes the multi-particle azimuth correlation of the final state.An analysis of the QMD data of the 6 0 0 AMeVAu + Au collisions shows that the lateral and elliptical currents in different events There are obvious fluctuations of the included angle in horizontal direction, and the multi-particle azimuthal correlation reveals the spatial-momentum correlation of nuclear matter movement in the interaction area. Ellipsoidal flow is sensitive to the evolution of collision system. In the intermediate fast region, The difference in mid-elliptic flow is related to the fact that the particles undergoes further scattering during the reaction