Volume 118, Number 4, May 2017
|Number of page(s)||5|
|Section||Physics of Gases, Plasmas and Electric Discharges|
|Published online||27 July 2017|
Generation of atmospheric-pressure homogeneous dielectric barrier discharge in air
School of Electrical Engineering, Beijing Jiaotong University - 100044, Beijing, China
Received: 17 April 2017
Accepted: 6 July 2017
To generate an atmospheric-pressure homogeneous dielectric barrier discharge (APHDBD) in air, a line-plane electrode with a floating-voltage electrode, which consists of a high-voltage electrode, floating-voltage electrode, air-gap, barrier dielectric, and metal electrode, is proposed. Studies of the electric field of the line-plane electrode with a floating-voltage electrode show that strong electric field areas beneficial for generating initial discharges are formed near the contact point between the high-voltage electrode and the floating-voltage electrode. These areas can provide sufficient and evenly distributed initial electrons for the air-gap with relatively uniform and low electric fields. Thus, a filamentary discharge in the air-gap can be inhibited. Experiments show that the floating-voltage electrode makes it easy to reduce the initial discharge voltage and improve the uniformity of discharge. When the air-gap is 2–8 mm, the discharge occurs in the APHDBD mode, and when it is 9 mm, it changes from diffuse-like to corona discharge.
PACS: 52.80.Tn – Other gas discharges / 52.80.Hc – Glow; corona / 52.50.Dg – Plasma sources
© EPLA, 2017
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