不同电离度下大气等离子体粒子行为的数值模拟

利用一个空间零维大气等离子体模型对其中的主要粒子在不同电离度情况下的变化规律进行了研究.得到放电后不同初始电子密度下的电子寿命，同时给出了主要带电粒子和中性粒子密度随时间的演化.结果表明，电子密度随时间快速衰减，电子寿命随电离度的增大而减小.对一些重要的中性粒子(如O，N，O₃和NO)随电离度增大的行为进行了分析. 关键词： 电离度 大气等离子体 数值模拟

Numerical simulation of particle species behavior in atmosphere plasmas with different ionization degree

A zero-dimensional model is used for studying the behavior of main particle species in atmosphere plasmas with different ionization degrees. The electron lifetimes are obtained for different initial density in an afterglow plasma, and the temporal evolutions of the main charged and neutral species are presented. The results show that the electron number density decays fast, and the lifetimes decrease with ionization degree increasing. Some important neutral species such as O, N, O₃ and NO are also analyzed with ionization degree increasing.