600A MeV Au+Au碰撞中末态粒子方位角分布的非对称性  

Azimuthally anisotropic emission of nuclear matter in Au+Au collisions at 600 A MeV

作　　者：王飞[1] 霍雷[1] 唐圭新[1] 陈相君[1] 张卫宁[1] 

机构地区：[1]哈尔滨工业大学应用物理系,黑龙江哈尔滨150001

出　　处：《哈尔滨工业大学学报》1999年第5期82-85,共4页Journal of Harbin Institute of Technology

基　　金：国家自然科学基金!9575013;哈工大基金

摘　　要：介绍了一种研究相对论重离子碰撞中垂直于反应平面的挤压效应和位于反应平面内的侧向流间的关联的方法，并对600AMeVAu＋Au碰撞中核物质的集体发射效应及其对事件多重数和末态粒子质量等的依赖性进行了分析结果表明：挤压效应随末态粒子质量的增加而增强；在近对心碰撞中，挤压效应与侧向流的关联较强，末态粒子的集体发射效应较为明显。A new technique for investigating the correlation between out - of- plane squeeze - out and in - plane sideward flow in relativistic heavy ion collisions is introduced. The collective emission effects of nuclear matter in Au + Au collisions at 600 A MeV are studied. The dependences of multiplicity and fragment mass on the collective ethession effect are discussed. The out - of - plane signal increases with the mass of the final state particles. For sethe - central collisions, it was found that the correlation betheen squeeze - out effect and sideward flow is stronger and the collective motion effects of nuclear matter is more obvious.

关 键 词：重离子碰撞 方位角分布 末态粒子 非对称性 

分 类 号：O571.22[理学—粒子物理与原子核物理] O571.414[理学—物理]