重离子碰撞横能分布的饱和现象与多源模型

The Saturation Phenomenon of Transverse Energy Distribution in Heavy-Ion Collisions and Multisource Modle

本文在深入分析高能不等核碰撞机制的基础上,进一步发展多源模型。计算了CERN和BNL两个能区的中心快度横能分布,成功地解释了高能时横能分布随靶核质量增加的加宽和低能时的饱和。给出了横能分布达到饱和(完全核阻止)的靶核质量。

Based on a careful analysis of the mechanism of high energy non-equal mass nuclei collisions, the multisource modle is further developed. The transverse energy distribution in central rapidity region at both CERN and BNL energy domains are calculated. The saturation of transverse energy distribution at low cnergy is explained, and the minimum mass number of the target nucleus for this saturation effect (full stopping) to occur is obtained.