Temporal Behaviour of Micro-discharge in Dielectric Barrier Discharges

• 来源期刊: 中国物理快报（英文版）
• 学科: 物理学
• 年，卷（期）: 2002,（10）
• 页码范围: 1476-1479
• 页数: 4页
• 分类号: O4
• 语种: 英文

摘要

A special dielectric barrier discharge (DBD) device consisting of two water electrodes has been designed. Thetemporal behaviour of the micro-discharge (filament) in the DBD in air at atmospheric pressure is measured byusing an optical method. The nonsymmetrical characteristic of the filament has been discovered for the first time.We propose an equation regarding the discharge moment by considering the memory effect of the accumulatedcharge and the influence of the fluctuation. The results deduced from the equation give a good explanation of theexperimental phenomenon, which show that the decay time constant of the acctunulated charges is much largerthan 100μs. The relative intensity of fluctuation amplitude is in the range 2-4% under the present experimentalconditions.