Poster De Conférence Année : 2025

Formation of electrodeless double-headed streamers (DHS) at sub-breakdown conditions

Résumé

Recent decades have seen significant advancements in understanding sprites and ionization waves. However, the natural occurrence of double-headed streamers (DHS) after breakdown remains unexplained. Extensive modeling studies have been conducted, but no experimental validation has been achieved until now. This work introduces the first experimental model of DHS using a primary plasma jet device at ground pressure. The experiment involves a noble gas flow (Helium or Neon) mixing with ambient air. Advanced diagnostics, such as optical emission spectroscopy (OES) and the Stark effect, were used to measure the electric field along the discharge axis. The results show that DHS can ignite under sub-breakdown conditions, highlighting the importance of pre-ionization. These findings align with previous modeling studies and provide insights into fundamental processes in atmospheric electricity.

Fichier non déposé

Dates et versions

hal-05170648 , version 1 (19-07-2025)

Identifiants

  • HAL Id : hal-05170648 , version 1

Citer

Baptiste Disson, G Sretenović, Vesna V. Kovačević, Nelly Bonifaci, Cécile Pichard, et al.. Formation of electrodeless double-headed streamers (DHS) at sub-breakdown conditions. 36th International Conference on Phenomena in Ionized Gases (ICPIG 36), Jul 2025, Aix-en-Provence, France. ⟨hal-05170648⟩
171 Consultations
0 Téléchargements

Partager

  • More