氮气辉光放电等离子体过程的PIC/MCC模拟

核聚变与等离子体物理 ›› 2009, Vol. 29 ›› Issue (1): 39-43.

氮气辉光放电等离子体过程的PIC/MCC模拟

赵书霞，张连珠

(河北师范大学物理科学与信息工程学院，石家庄 050016)

收稿日期:2008-04-05 修回日期:2008-09-20 出版日期:2009-03-15 发布日期:2010-05-24
作者简介:赵书霞(1981-)，女，河北人，博士生，主要从事等温等离子体动力学过程数值模拟研究。
基金资助:
河北省自然科学基金资助项目(A2006000123)

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

ZHAO Shu-xia, ZHANG Lian-zhu

(College of Physics Science and Information Engineering, Hebei Normal University, Shijiazhuang 050016)

Received:2008-04-05 Revised:2008-09-20 Online:2009-03-15 Published:2010-05-24

摘要/Abstract

摘要： 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。

关键词: 氮气辉光放电, 粒子模拟, 蒙特卡罗模型, 负辉区

Abstract: 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.

Key words: Nitrogen glow discharge, Particle-in-cell, Monte Carlo method, Negative glow

中图分类号:

O539

赵书霞, 张连珠. 氮气辉光放电等离子体过程的PIC/MCC模拟[J]. 核聚变与等离子体物理, 2009, 29(1): 39-43.

ZHAO Shu-xia, ZHANG Lian-zhu. PIC/MCC simulation of the plasma dynamics in nitrogen glow discharge[J]. NUCLEAR FUSION AND PLASMA PHYSICS, 2009, 29(1): 39-43.

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