高能诱导核反应中的核碰撞几何与末态粒子的间歇行为

Intermittent Behaviour of Final-State Particles and Nuclear Collision Geometry in High Energy Induced Nuclear Reactions

考虑到核碰撞几何，我们推导出高能诱发核反应中二阶阶乘矩与参加反应核子数涨落之间的关系．分析表明，在高能碰撞的射弹碎裂区，强子－核反应末态粒子的间歇性质决定于其强子－强子子过程的间歇特征；而在靶碎裂区，它却主要依赖于参加反应核子数的涨落．推广到核－核反应（Ｂ＜＜Ａ），其间歇强度低于强子－核反应．

The relation between the second order factorial moment and the number of participant nucleons in high energy induced nuclear reactions is deduced by taking account of the nuclear collision geometry. It is shown that in projectile fragmentation region of the high energy collisions the intermittent property of the final-state particles in hadron-nucleus reactions is dependent on the intermittent character of the sub-process of hadron-hadron collisions, but in target fragmentation region it mainly depends on the fluctuation of the number of participant nucleons. For nucleus-nucleus reactions (B << A), its intermittent strength is lower than that of hadron-nucleus reactions.