中国物理B ›› 2011, Vol. 20 ›› Issue (1): 15201-015201.doi: 10.1088/1674-1056/20/1/015201
M. G. Kong1, 尚万里2, 江少恩2, 杨家敏2, 刘慎业2, 张远涛3, 王德真4, 桑超峰4
Shang Wan-Li(尚万里)a)†, Zhang Yuan-Tao(张远涛)b), Wang De-Zhen(王德真)c), Sang Chao-Feng(桑超峰)c), Jiang Shao-En(江少恩) a), Yang Jia-Min(杨家敏)a), Liu Shen-Ye(刘慎业)a), and M. G. Kongd)
摘要: This paper performs a numerical simulation of concentric-ring discharge structures within the scope of a two-dimensional diffusion--drift model at atmospheric pressure between two parallel circular electrodes covered with thin dielectric layers. With a relative high frequency the discharge structures present different appearances of ring structures within different radii in time due to the evolvement of the filaments. The spontaneous electron density distributions help understanding the formation and development of self-organized discharge structures. During a cycle the electron avalanches are triggered by the electric field strengthened by the feeding voltage and the residual charged particles on the barrier surface deposited in the previous discharges. The accumulation of charges is shown to play a dominant role in the generation and annihilation of the discharge structures. Besides, the rings split and unify to bring and annihilate rings which form a new discharge structure.
中图分类号: (Dielectric properties)