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

11 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

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this