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Indexed by:期刊论文

Date of Publication:2011-10-01

Journal:PHYSICS OF PLASMAS

Included Journals:Scopus、SCIE、EI

Volume:18

Issue:10

ISSN No.:1070-664X

Key Words:glow discharges; helium; plasma simulation; Townsend discharge

Abstract:The influence of external driving frequency on the discharge mode in the dielectric barrier discharge was investigated with a two-dimensional, self-consistent fluid model. The simulation results show that the helium discharge exhibits three operation modes: Townsend, homogeneous glow, and local glow discharges from the lower frequency (1 kHz) to the higher frequency (100 kHz) under discharge parameters specified in this work. The discharge operates in a Townsend mode when the driving frequency varies from 1 to about 7 kHz; while it exhibits homogenous glow characteristics in an approximate range from 7 to 65 kHz; when the external frequency exceeds 65 kHz, it turns into a local glow discharge. The effects of external driving frequency on the discharge mode were revealed and the physical reasons were discussed. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3647551]