中国物理B ›› 2016, Vol. 25 ›› Issue (12): 125203-125203.doi: 10.1088/1674-1056/25/12/125203
• PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES • 上一篇 下一篇
Numerical simulation of a direct current glow discharge in atmospheric pressure helium
Zeng-Qian Yin(尹增谦), Yan Wang(汪岩), Pan-Pan Zhang(张盼盼), Qi Zhang(张琦), Xue-Chen Li(李雪辰)
- 1. Department of Mathematics and Physics, North China Electric Power University, Baoding 071003, China;
2. College of Physics Science & Technology, Hebei University, Baoding 071002, China
Numerical simulation of a direct current glow discharge in atmospheric pressure helium
Zeng-Qian Yin(尹增谦)1, Yan Wang(汪岩)1,2, Pan-Pan Zhang(张盼盼)2, Qi Zhang(张琦)2, Xue-Chen Li(李雪辰)2
- 1. Department of Mathematics and Physics, North China Electric Power University, Baoding 071003, China;
2. College of Physics Science & Technology, Hebei University, Baoding 071002, China
摘要：
Characteristics of a direct current (DC) discharge in atmospheric pressure helium are numerically investigated based on a one-dimensional fluid model. The results indicate that the discharge does not reach its steady state till it takes a period of time. Moreover, the required time increases and the current density of the steady state decreases with increasing the gap width. Through analyzing the spatial distributions of the electron density, the ion density and the electric field at different discharge moments, it is found that the DC discharge starts with a Townsend regime, then transits to a glow regime. In addition, the discharge operates in a normal glow mode or an abnormal glow one under different parameters, such as the gap width, the ballast resistors, and the secondary electron emission coefficients, judged by its voltage-current characteristics.
中图分类号: (Plasma simulation)
- 52.65.-y