Electric field measurements in a quasi-two-dimensional Ns pulse discharge in atmospheric air

Marien Simeni Simeni, Benjamin M. Goldberg, Cheng Zhang, Kraig Frederickson, Walter R. Lempert, Igor V. Adamovich

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Electric field in a quasi-two-dimensional, nanosecond pulse, dielectric barrier discharge in atmospheric air is measured by picosecond four-wave mixing. The results demonstrate electric field offset on the discharge center plane before the discharge pulse, due to surface charge accumulation on the dielectric from the previous pulse. The electric field follows the applied voltage until “forward” breakdown occurs, after which the field in the plasma decreases due to charge separation. When the applied voltage is reduced, the field in the plasma reverses direction and increases again, until the “reverse” breakdown occurs, producing a secondary reduction in the electric field. After the discharge pulse, the field decays on a microsecond time scale. Spatially resolved measurements show that the discharge develops as a surface ionization wave. Significant surface charge accumulation on the dielectric surface is detected near the end of the discharge pulse. Measurements of electric field vector components demonstrate that the vertical field peaks ahead of the ionization wave, while the horizontal field peaks near the ionization wave front. Behind the wave, the vertical field remains low, near the detection limit, while the horizontal field is gradually reduced to near the detection limit at the discharge center plane.

Original languageEnglish (US)
Title of host publicationAIAA SciTech Forum - 55th AIAA Aerospace Sciences Meeting
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
ISBN (Electronic)9781624104473
DOIs
StatePublished - 2017
Externally publishedYes
Event55th AIAA Aerospace Sciences Meeting - Grapevine, United States
Duration: Jan 9 2017Jan 13 2017

Publication series

NameAIAA SciTech Forum - 55th AIAA Aerospace Sciences Meeting

Other

Other55th AIAA Aerospace Sciences Meeting
Country/TerritoryUnited States
CityGrapevine
Period1/9/171/13/17

Bibliographical note

Funding Information:
The support of US Department of Energy Plasma Science Center “Predictive Control of Plasma Kinetics: Multi-Phase and Bounded Systems”, and US DOE Center for Exascale Modeling of Plasma Assisted Combustion is gratefully acknowledged. This work was supported in part by the National Natural Science Foundation of China under contract 51477164. We would also like to thank Dr. Keisuke Takashima for his help adapting the high-voltage pulse generator for these experiments and to Dr. Hidemasa Takana for discussions of kinetic modeling of nonequilibrium air plasma.

Publisher Copyright:
© 2017 by M. Simeni Simeni, B. M. Goldberg, C. Zhang, K. Frederickson, W. R. Lempert, and I. V. Adamovich.

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