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Poster Session I

4:30 pm – 6:30 pm, Tuesday October 14 Session DT4 COEX, Lobby E
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Inception and Growth of Electrodeless Double-Headed Streamer Discharges at atmospheric pressure

Poster 19
Presenter: Baptiste Disson (GREMI (Groupe de Recherches sur l'Énergétique des Milieux Ionisés)—UMR7344 CNRS / Université d'Orléans, 14 rue d'Issoudun, BP6744, 45067 Orléans, France)
Authors: Goran Sretenovic (Faculty of Physics, University of Belgrade, PO Box 44, 11000 Belgrade, Republic of Serbia), Vesna Kovacevic (Faculty of Physics, University of Belgrade, PO Box 44, 11000 Belgrade, Republic of Serbia), Nelly Bonifaci (G2Elab (Laboratoire de Génie Électrique de Grenoble)—UMR5269 CNRS / Grenoble INP / Université Grenoble Alpes, 21 rue des Martyrs, 38042 Grenoble, France), Cécile Pichard (Polytech Orléans, Université d'Orléans, Site Galilée, 12 rue de Blois, 45067 Orléans, France), Christophe Cachoncinlle (GREMI (Groupe de Recherches sur l'Énergétique des Milieux Ionisés)—UMR7344 CNRS / Université d'Orléans, 14 rue d'Issoudun, BP6744, 45067 Orléans, France), Ahmed Khacef (GREMI (Groupe de Recherches sur l'Énergétique des Milieux Ionisés)—UMR7344 CNRS / Université d'Orléans, 14 rue d'Issoudun, BP6744, 45067 Orléans, France), Sylvain Iseni (GREMI (Groupe de Recherches sur l'Énergétique des Milieux Ionisés)—UMR7344 CNRS / Université d'Orléans, 14 rue d'Issoudun, BP6744, 45067 Orléans, France)

This poster introduces an innovative experimental model that replicates the natural atmospheric phenomenon of double-headed streamers (DHS) in a lab at ground pressure. It's the first to mimic the inception of an electrodeless DHS, reflecting observations from the atmospheric electricity community [1]. Using guided ionization waves from an Atmospheric Pressure Plasma Jet (APPJ), the experiment achieved high reproducibility and predictability in DHS formation. The method created conditions consistent with key assumptions, such as an initial preionized column of free charges before breakdown [2], aligning with various simulation results in literature [2, 3]. Distinct positive and negative streamers were observed, propagating simultaneously from the breakdown point. The discharge's stability enabled advanced diagnostics, including time- and space-resolved optical emission spectroscopy, facilitating the first measurements of velocity growth, gas temperature, and electric field of a DHS [4]. The electric field data confirmed the identification of the streamers and revealed that DHS can ignite under sub-breakdown conditions, emphasizing the crucial role of preionization.

[1] Pasko VP, Inan US, Bell TF. Geophys Res Lett. 1998;25(12):2123–6.

[2] Liu N, Kosar B, Sadighi S, Dwyer JR, Rassoul HK. Phys Rev Lett. 2012;109(2):025002.

[3] Luque A, Ratushnaya V, Ebert U. J Phys D: Appl Phys. 2008;41(23):234005.

[4] Iséni S, Sretenović GB, Kovačević VV, Bonifaci N, et al. Phys Rev E. 2025;111(2):L023202. 

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