期刊
PLASMA SOURCES SCIENCE & TECHNOLOGY
卷 28, 期 8, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1361-6595/ab2d7a
关键词
streamer-to-filament transition; nanosecond surface dielectric barrier discharge; filamentary discharge
资金
- LabEx Plas@Par
- French National Research Agency (ASPEN Project)
- French-Russian international laboratory LIA KaPPA `Kinetics and physics of pulsed plasmas and their afterglow' (CNRS)
- China Scholarship Council (CSC)
Streamer-to-filament transition is a general feature of high pressure high voltage nanosecond surface dielectric barrier discharges (nSDBDs) for mixtures containing molecular gases. The transition is observed at high pressures and voltages in a single-shot experiment a few nanoseconds after the start of the discharge. A set of experimental results comparing streamer-to-filament transition and properties of plasma in the filaments for the identical high voltage pulses of negative and positive polarity is presented. The transition curves in voltage-pressure coordinates are obtained for N-2:O-2 mixtures with different content of molecular oxygen, from 0% to 20%, at the pressure range 1-12 bar. Continuous optical spectra are compared for both polarities in 6 bar synthetic air. Electron density is calculated from Stark broadening of H-alpha line at lambda = 656.3 nm in the discharge and in early afterglow, 40 nanoseconds after the end of the high voltage pulse. Hydrodynamic perturbations are measured using schlieren imaging in 1-6 bar air for streamer and filamentary mode for both polarities. The review of common and distinctive features of the filamentary single-shot nSDBD for two polarities of the applied pulse is provided.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据