Experimental and modelling study of organization phenomena in dielectric barrier discharges with structurally inhomogeneous wood substrates

被引：11
|
作者：
Levasseur, O. [1 ]
Profili, J. [1 ,2 ]
Gangwar, R. K. [1 ]
Naude, N. [2 ,3 ]
Clergereaux, R. [2 ,3 ]
Gherardi, N. [2 ,3 ]
Stafford, L. [1 ]
机构：
[1] Univ Montreal, Dept Phys, Montreal, PQ H3C 3J7, Canada
[2] Univ Toulouse, UPS, INPT, LAPLACE, F-31062 Toulouse 9, France
[3] CNRS, LAPLACE, F-31062 Toulouse 9, France
来源：
PLASMA SOURCES SCIENCE & TECHNOLOGY | 2014年 / 23卷 / 05期
基金：
加拿大自然科学与工程研究理事会;
关键词：
dielectric barrier discharge; organization; pattern formation; wood; ATMOSPHERIC-PRESSURE GLOW; SELF-ORGANIZATION; PLASMA; FILAMENTS; GAS; SURFACES; HELIUM; DIAGNOSTICS; DEPOSITION; DYNAMICS;
D O I：
10.1088/0963-0252/23/5/054006
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
The spatial organization of dielectric barrier discharges operating at atmospheric pressure in the presence of complex wood substrates was analysed using optical imaging, current-voltage (I-V) characteristics, and optical emission spectroscopy combined with a collisional-radiative model to extract the average electron energy. The structural inhomogeneities of selected wood species produced non-uniform light emission patterns while maintaining homogeneous-like I-V characteristics and spatially uniform average electron energy. Based on a simple electrical model of the discharge, this localization was ascribed, at least partially, to a spatial modulation of the relative dielectric permittivity on 'early' versus 'late' wood affecting the local voltage applied to the gas, and thus the local discharge current.
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页数：6
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