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Ultra-high-frequency (UHF) sensor is the vital component of a partial discharge detection system and its coupling performance is affected by structural parameters. On the basis of the cavity model theory, this paper studied the influence of the disc electrode diameter, the thickness, the dielectric constant of the dielectric substrate, and the position of the coaxial connection on the performance...
Dielectric barrier discharges in atmospheric pressure gas, especially in air, are usually made of a large number of filamentary micro-discharges, which may cause the ununiformity of the surface treatment. In this paper, a new method to obtain a homogeneous dielectric barrier discharge in air is proposed. The homogeneous discharge, which is of a nature in between those of the filamentary discharge...
Dielectric barrier discharge is one of the most usual methods for obtaining atmospheric pressure plasmas. It is proved theoretically that obtaining a uniform dielectric barrier discharge is strongly related to the concentration of seed electrons. Therefore, for producing enough electron concentration under a low electrical field and homogenize the discharge, some pre-ionization methods including accessorial...
Summary form only given. Dielectric barrier discharges in air are generally streamer-like discharges, however, a homogeneous discharge, called atmospheric pressure glow discharge, may be obtained in some noble gases such as helium and argon. Dielectric barrier discharges in nitrogen and argon are studied experimentally to determine mechanisms controlling the transition from glow to streamer discharge...
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