On the production of energetic electrons at the negative streamer head at moderate overvoltage

Dmitry Levko, Laxminarayan L. Raja

Research output: Contribution to journalArticlepeer-review

19 Scopus citations


The generation of energetic electrons by the streamer with a negatively charged head is analyzed using a self-consistent two-dimensional Particle-in-Cell Monte Carlo collision model. The streamer is generated in the vicinity of the cathode at a moderate gap overvoltage and propagates toward the anode due to self-consistent electron/ion multiplication in front of the streamer head. We obtained the generation of energetic electrons with energy exceeding 1 keV at the streamer head when the electric field at the streamer head starts exceeding ∼200 kV/cm. It was found that a small number of energetic electrons can significantly accelerate the streamer propagation and even change the streamer propagation path.
Original languageEnglish (US)
Pages (from-to)124503
JournalPhysics of Plasmas
Issue number12
StatePublished - Dec 2017
Externally publishedYes

Bibliographical note

KAUST Repository Item: Exported on 2021-04-06
Acknowledgements: This research was supported by Competitive Research Funding from King Abdullah University of Science and Technology (KAUST).
This publication acknowledges KAUST support, but has no KAUST affiliated authors.

ASJC Scopus subject areas

  • Condensed Matter Physics


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