Numerical Simulation of He/N<sub>2</sub> Mixture Glow Discharge at Low Pressure

ZOU Xiaobing; YANG Xinting; FU Yangyang; LUO Haiyun; YANG Shuo; WANG Xinxin

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Numerical Simulation of He/N₂ Mixture Glow Discharge at Low Pressure

更新时间：2025-12-08

- Numerical Simulation of He/N₂ Mixture Glow Discharge at Low Pressure
- Vol. 42, Issue 12, Pages: 3741-3746(2016)
- 作者机构：
  
  清华大学电机工程与应用电子技术系
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published Online：31 December 2016，
  
  Published：2016
- 稿件说明：
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ZOU Xiaobing, YANG Xinting, FU Yangyang, et al. Numerical Simulation of He/N₂ Mixture Glow Discharge at Low Pressure[J]. 2016, 42(12): 3741-3746.
DOI：

ZOU Xiaobing, YANG Xinting, FU Yangyang, et al. Numerical Simulation of He/N₂ Mixture Glow Discharge at Low Pressure[J]. 2016, 42(12): 3741-3746. DOI：

摘要

针对低气压下含有少量氮气杂质(体积分数为10

–6

–4

)的氦气辉光放电特性进行研究

通过建立相应的二维流体模型

利用COMSOL有限元法数值求解了基本物理方程

得到了放电气隙击穿电压以及内部物理参量的空间分布

分析讨论了氮气杂质的含量对低气压下氦气辉光放电的影响。研究结果表明:随着杂质含量的升高

由于氮分子和氦亚稳态原子的彭宁电离过程降低了击穿电压

因此气隙维持电压降低

回路电流升高。并且由于彭宁电离为放电提供了较多电子

导致电子数密度升高、电场强度降低、电子温度降低。

Abstract

We focused on the characteristics of helium glow discharge with small nitrogen impurities(with volume fraction of 10

–6

–4

) at low pressures. We proposed a two-dimensional fluid model and calculated the elementary physical equations by a finite element method in COMSOL.Moreover

we analyzed the influence of small nitrogen impurities on the helium glow discharge at low pressures. The results show that Penning ionization process of nitrogen molecule and metastable helium lowers the breakdown voltage

and increase in the amount of nitrogen in the mixture will result in the decrease of maintaining voltage and the increase of current. In addition

the electron density will increase

and the electric field and electron temperature in plasma will decrease. This is mainly caused by the Penning ionization process which can provide sufficient electron for the discharge spa

ce.

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Related Author

YUE Yang

LUO Haiyun

LIU Kai

WANG Xinxin

LONG Jidong

DONG Pan

XIE Yutong

ZHANG Linwen

Related Institution

Suzhou Power Supply Company, Jiangsu Electric Power Corporation

Pudong Power Supply Company, Shanghai Electric Power Corporation

State Key Laboratory of Control and Simulation of Power System and Generation Equipments, Department of Electrical Engineering, Tsinghua University

Key Laboratory of Pulsed Power, China Academy of Engineering Physics

Institute of Fluid Physics, China Academy of Engineering Physics

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Numerical Simulation of He/N2 Mixture Glow Discharge at Low Pressure

DOI：

摘要

Abstract

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Numerical Simulation of He/N₂ Mixture Glow Discharge at Low Pressure