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Open AccessArticle

Discharge Regimes Transition and Characteristics Evolution of Nanosecond Pulsed Dielectric Barrier Discharge

1
Key Lab of Materials Modification, Dalian University of Technology, Ministry of Education, Dalian 116024, China
2
Key Laboratory of Ecophysics, College of Sciences, Shihezi University, Shihezi 832003, China
3
College of Electrical Engineering and Control Science, Nanjing Tech University, Nanjing 211800, China
4
Laboratoire des Sciences des Procédés et des Matériaux CNRS., Institut Galilée, Université Paris 13, Sorbonne Paris Cité, 93430 Villetaneuse, France
*
Author to whom correspondence should be addressed.
Nanomaterials 2019, 9(10), 1381; https://doi.org/10.3390/nano9101381
Received: 30 August 2019 / Revised: 17 September 2019 / Accepted: 24 September 2019 / Published: 26 September 2019
(This article belongs to the Special Issue Plasma for Energy and Catalytic Nanomaterials)
Discharge regime transition in a single pulse can present the breakdown mechanism of nanosecond pulsed dielectric barrier discharge. In this paper, regime transitions between streamer, diffuse, and surface discharges in nanosecond pulsed dielectric barrier discharge are studied experimentally using high resolution temporal–spatial spectra and instantaneous exposure images. After the triggering time of 2–10 ns, discharge was initiated with a stable initial streamer channel propagation. Then, transition of streamer-diffuse modes could be presented at the time of 10–34 ns, and a surface discharge can be formed sequentially on the dielectric plate. In order to analyze the possible reason for the varying discharge regimes in a single discharge pulse, the temporal–spatial distribution of vibrational population of molecular nitrogen N2 (C3Πu, v = 0,1,2) and reduced electric field were calculated by the temporal–spatial emission spectra. It is found that at the initial time, a distorted high reduced electric field was formed near the needle electrode, which excited the initial streamer. With the initial streamer propagating to the dielectric plate, the electric field was rebuilt, which drives the transition from streamer to diffuse, and also the propagation of surface discharge. View Full-Text
Keywords: nanosecond pulse; temporal-spatial spectra; breakdown mechanism; reduced electric field; vibrational population nanosecond pulse; temporal-spatial spectra; breakdown mechanism; reduced electric field; vibrational population
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MDPI and ACS Style

Zhang, L.; Yang, D.; Wang, S.; Jia, Z.; Yuan, H.; Zhao, Z.; Wang, W. Discharge Regimes Transition and Characteristics Evolution of Nanosecond Pulsed Dielectric Barrier Discharge. Nanomaterials 2019, 9, 1381.

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