对扩散运动中粒子动能平均值发散问题的讨论

DISCUSSION ON THE DISPERSION OF PARTICLE'S AVERAGE KINETIC ENERGY IN DIFFUSION

从扩散运动的不规则力出发 ,指出了泰勒理论导致扩散运动中粒子动能平均值发散的根源 ,从而提出了解决此问题的一种新的理论模型—即粒子碰撞前速度与碰撞中速度的变化量不应是完全独立的概率变量 .

From irregular force of diffusion, we point out the origin of dispersion of particle's kinetic energy resulted from Taylor theory, and propose a new model to solve this trouble-the velocity of pre-collision and the velocity of in-collision are coherent.