Boltzmann方程用于气体分子系统与用于非平衡等离子体之间的差异  

Differences Between the Boltzmann Equations for Gas Molecule System and for Non-equilibrium Plasma

作　　者：周建刚[1] 

机构地区：[1]大连大学物理科学与技术学院

出　　处：《高电压技术》2016年第6期1929-1934,共6页High Voltage Engineering

基　　金：辽宁省教育厅科学研究资助项目(L2012449);大连市科技计划资助项目(2013E12SF067);大连大学博士启动资金(01409)~~

摘　　要：尽管严格地说传统的Boltzmann方程应用范围仅是中性气体分子系统,但将其应用于常见的非平衡等离子体包括大气压条件下流动的非平衡等离子体时,对其结果做一定修正后仍然正确。为解释其原因,对Boltzmann方程的建立过程进行了分析。结果表明:要将Boltzmann方程的应用范围从中性气体分子体系扩展到各种条件下的非平衡等离子体,同时又不必在最后结果上做人为的修正,则Boltzmann方程右边碰撞项的后面要加上产生项和损失项。添加了产生项和损失项的Boltzmann方程是一个既适用于气体分子系统也适用于各种非平衡等离子体的普适基本方程。Although the application range of traditional Boltzmann equation is, strictly speaking, only applicable for the system consisting of the neutral gas molecules, its application is still suitable in the system of common non-equilibrium plasma including the ones flowing under the atmospheric pressure if its results are suitably corrected. In order to explain the reason, the process of establishing Boltzmann equation is analyzed. It can be seen from the results that in order to extend the application range of the Boltzmann equation from neutral gas molecules to the non equilibrium plasma under various conditions without any man-made correction, meanwhile, for final results, the produced item and the loss item are needed to be added into the back of the collision term in the right of Boltzmann equation. The Boltzmann equation with the added generation item and loss item is a universal equation, which can be applicable for both the gas molecular system and the non equilibrium plasma system.

关 键 词：BOLTZMANN方程 气体分子体系统 非平衡等离子体 带电粒子 产生项 损失项 

分 类 号：O561[理学—原子与分子物理] O53[理学—物理]