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采用粒子模拟与蒙特卡罗模型相结合(PIC/MCC)的方法，建立了氮分子气体辉光放电自洽的混合模型，其中带电粒子在电场中的运动及其产生的自洽场由PIC方法的静电模型描述，粒子间的碰撞过程由MC方法描述。模拟了放电过程及带电粒子(e、N2+、N+)在整个放电空间的行为及与之对应的自洽电场和电势的分布，通过计算带电粒子在负辉区的几率分布函数，讨论了带电粒子(e、N2+、N+)在负辉区的行为和分布特征。计算的分子离子密度与实验结果一致。

PIC/MCC simulation of the plasma dynamics in nitrogen glow discharge

A self-consistent hybrid model of PIC/MCC (particle-in-cell / Monte Carlo Collisions) for nitrogen glow (NG) discharge is established, in which the movement of charge-particles and the self-generated field are described by the electrostatic particle-in-cell method and the collision processes are simulated by the Monte Carlo method. The discharge processes, the behavior of charge-particles (e、N2+、N+) and the self-consistent electric field are simulated in the whole discharge space, the behavior and distribution of charge-particle (e、N2+、N+) in NG are discussed through the calculation of electron/ion energy probability function (EEPF/IEPF). The N2+ density simulated agrees well with the experimental result.