摘要
对CERNNA35组公布的实验数据所显示的碰撞特点进行了分析。指出弥散D与平均多重数<n>的比值为一常数，与入射能量、快速窗口无关的特征可由几何模型解释，但与靶质量无关的特点不能由纯几何得到有力的证明。指出纯几何模型在定量上与实验数据有偏差。利用多源模型进行了计算，获得了与实验数据符合得很好的结果。
The feature of impact parameter given by NA35 collabortion is analysed. The feature of the size of D/<n> independenting of the incident energy, and the rapidity window size is also analysed by using a geometry model, but the invariant of D/<n> on incident energy can't be studied with geo metric analysing. The deviation of pure geometric model with the data is analysed by using the multi source model.
关键词
原子物理学
超相对论
重离子碰撞
rapidity windows
rapidity distribution
multiplicity distribution
geometry analysing
multi-source model
