关键词: 
角分布 /
各向同性的火球模型 /
靶碎块 /
横向流

摘要: 用各向同性的火球模型研究了能量为14.6 AGeV的¹⁶OEm碰撞中末态产物的发射角分布和能量为4.5 AGeV的28SiEm碰撞中靶核碎块中黑粒子的方位角分布。 在这个模型中增加横向流可以描述能量为3.7 AGeV的C-Ne和C-Cu碰撞中靶核碎块π介子和质子的方位角分布。 计算结果与实验数据符合得较好， 表明改进了的火球模型能够描述高能核核碰撞的角分布。
The emission angular distributions of finalstate particles produced in ¹⁶OEmulsion (Em) collisions at 14.6 AGeV, and the azimuthal angular distributions for the black particles produced in 28SiEm at 4.5 AGeV have been studied by an isotropic fireball model. The model including transverse flow is used to describe the azimuthal distributions of midrapidity π- mesons and protons produced in CNe and CCu collisions at 3.7 AGeV. The calculated results are in agreement with the experimental angular distributions. It shows that the improved fireball model gives a good description of nucleusnucleus collisions at high energies.