Bernard Stéphane

Friday 11
J. Test Techniques and Diagnostics
Chair: J. Schein, J.E. Jones - Each talk is 10'+2' duration
› 10:50 - 11:05 (15min)
› Cabannes
Electric spark discharge in air characterization by following electrodes erosion
Stéphane Pellerin  1@  , Stéphane Bernard  2, *@  , Philippe Gillard  2@  , Dragos Astanei  1@  
1 : Groupe de recherches sur l'énergétique des milieux ionisés  (GREMI)  -  Website
CNRS : UMR7344, Université d'Orléans
14 Rue d'Issoudun - BP 6744 45067 ORLEANS CEDEX 2 -  France
2 : Laboratoire Pluridisciplinaire de Recherche en Ingénierie des Systèmes et Mécanique Energétique  (PRISME)
Université d'Orléans : EA4229
* : Corresponding author

The plasma column diagnosis of an electric discharge used to ignite dust explosion, has been performed by optical emission spectroscopy methods using the well-known Boltzmann plot method based on W I spectral lines, to determine the electron temperatures. In the peripherical zone of the discharge, molecular spectroscopy methods are applied, by comparing the experimental spectrum with a simulated one.

The first results indicate that the plasma is close to the local thermodynamic equilibrium at a temperature close to 11000 K.


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