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首页> 美国卫生研究院文献>Nanomaterials >Discharge Regimes Transition and Characteristics Evolution of Nanosecond Pulsed Dielectric Barrier Discharge
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Discharge Regimes Transition and Characteristics Evolution of Nanosecond Pulsed Dielectric Barrier Discharge

机译：纳秒脉冲介质屏障放电的放电制度转变和特征演化

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摘要

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.
机译：在单个脉冲中的放电调节转换可以呈现纳秒脉冲介电阻挡放电的击穿机构。在本文中，使用高分辨率时间空间谱和瞬时曝光图像通过高分辨率脉冲介质屏障放电在娱乐器，漫射和表面放电之间的制度转换。在2-10 ns的触发时间之后，通过稳定的初始流信道传播启动放电。然后，可以在10-34 ns的时间上呈现炉漫射模式的转变，并且可以在介电板上顺序地形成表面放电。为了分析在单个放电脉冲中不同的放电制度的可能原因，通过时间计算振动氮N 2（C3πu，v = 0,1,2）和缩减电场的振动群的时间空间分布 - 天空发射光谱。发现在初始时间，在针电极附近形成扭曲的高减速电场，该针电极靠近初始飘带。利用传播到电介质板的初始流动器，重建电场，该电场驱动从飘带转变以漫射，以及表面放电的传播。

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