Open AccessRealization of homogenous discharge at atmospheric pressure in air using wire mesh covered by PET films
Author(s) -
Luo Hai-Yun,
Xinxin Wang,
Ting Mao,
Zhuo Liang,
Lü Bo,
Guan Zhi-Cheng,
Liming Wang
Publication year - 2008
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.57.4298
Subject(s) - brush discharge , materials science , atmospheric pressure , townsend discharge , homogeneity (statistics) , electrode , rogowski coil , electric discharge in gases , glow discharge , homogeneous , waveform , dielectric barrier discharge , plasma , optics , voltage , optoelectronics , electrical engineering , physics , current (fluid) , ionization , meteorology , computer science , ion , quantum mechanics , machine learning , dielectric , thermodynamics , engineering
Homogenous discharges were produced in a 2-mm air gap at atmospheric pressure by using 325# fine wire mesh as electrodes covered with 0.1 mm PET films and 50Hz line power source paralleled with a discharge-stabilizing capacitor. For obtaining such a homogeneous discharge it is important to attach tightly the wire mesh together with the PET film on the surface of a Rogowski electrode. The experiments show that the commonly used method to distinguish a homogenous discharge from a non-homogeneous one by the waveforms of discharge current and transferred charge is not always reliable since the waveforms could tell only the discharge simultaneity rather than the discharge homogeneity. A fast image of discharge with an exposure time not longer than 100ns should be used instead to judge the discharge homogeneity. It is the first time in the experiments of atmospheric pressure discharge using wire mesh electrode covered by PET film such fast images were obtained, which indicates that the homogeneous discharge is a Townsend discharge rather than a glow discharge.