Electric field measurements of DC-driven positive streamer coronas using the E-FISH method

Lee R. Strobel, Benjamin C. Martell, Anatoli Morozov, Arthur Dogariu, Carmen Guerra-Garcia

Research output: Contribution to journalArticlepeer-review

Abstract

This paper reports on electric field measurements, using the electric field-induced second harmonic (E-FISH) method, sampling the spatial structure and temporal development of DC-driven positive streamer coronas in atmospheric-pressure air at relevant timescales to examine the self-pulsating behavior of the discharge. The discharge is triggered from a point-to-plate geometry and consists of transient coronas, which bridge the inter-electrode gap and pulsate at about 3 kHz, superimposed with a persisting glow corona. The measurements presented challenge the phenomenological explanation for the pulsations based on field recovery at the anode driven by the evacuation of positive ions by electric drift effects and hint at a propagating wave-like feature from the plate-cathode to the tip-anode.

Original languageEnglish (US)
Article number114102
JournalApplied Physics Letters
Volume121
Issue number11
DOIs
StatePublished - Sep 12 2022

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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