AGS、SPS能区横-纵相空间分布对称特性研究  

Study on the Symmetric Properties of the Transverse-Lognitudinal Phase Space Distributions at the AGS & SPS

作　　者：杜晓超[1] 冯笙琴[1] 

机构地区：[1]三峡大学理学院,湖北宜昌443002

出　　处：《三峡大学学报（自然科学版）》2007年第4期382-384,共3页Journal of China Three Gorges University：Natural Sciences

基　　金：湖北省自然科学基金计划青年杰出人才项目(2006ABB036);湖北省教育厅重大科研项目(2003Z002);三峡大学重大科研项目(2003C02)

摘　　要：建立的椭球衰变模型,从横、纵相空间的非对称特性出发,通过建立椭球坐标系,引入横-纵相空间的对称特性参量(椭度e),考虑e与碰撞中心度的关系,建立e与b的负指数函数关系(e=e0e-β0b),用发展了的椭球衰变理论对不同碰撞能量(AGS能区、SPS能区)下的实验结果进行分析.The ellipsoidal decay model is established based on the description of dissymmetric properties of nucleus-nucleus collision processes. We assume that the excited system decays ellipsoidally; then found the ellipsoidal coordinates, thereby the parameter, ellipticity e, describes the dissymmetric properties. And then we give the following equation to consider the relationship between e and the impact parameter b as e=e0e-β0b;. The following analysis of some experimental data are investigated by this model.

关 键 词：椭球衰变模型 椭度参量 碰撞参量 

分 类 号：O57[理学—粒子物理与原子核物理]