title: Dielectric barrier discharge for multi-point plasma-assisted ignition at high pressures.
abstract: Nanosecond surface dielectric barrier discharge (nSDBD) is an efficient tool for a multi-point plasma-assisted ignition of combustible mixtures at elevated pressures. The discharge develops as a set of synchronously propagated from the high-voltage electrode charged channels (streamers), with a typical density up to a few streamers per millimetre of the length of the electrode. In combustible mixtures, nSDBD initiates numerous combustion waves propagating from the electrode. Very little is known about nSDBD at high pressures. This work presents a comparative experimental study of the surface dielectric barrier discharge initiated by high-voltage pulses (U=±(20-60) kV) of different polarities in air at elevated pressures (P=1-6 atm). Discharge morphology, deposited energy and velocity of the discharge front propagation are analysed. Differences between the discharges of positive and negative polarity, as well as the changes in the discharge morphology with changing of a gas mixture composition.
authors.affiliation: Laboratory of Plasma Physics (CNRS, Ecole Polytechnique, Sorbonne Universities, University of Pierre and Marie Curie-Paris 6, University Paris-Sud), Ecole Polytechnique, route de Saclay, Palaiseau 91128, France.
authors.forename: S A
authors.initials: SA
authors.lastname: Shcherbanev
authors.affiliation: Laboratory of Plasma Physics (CNRS, Ecole Polytechnique, Sorbonne Universities, University of Pierre and Marie Curie-Paris 6, University Paris-Sud), Ecole Polytechnique, route de Saclay, Palaiseau 91128, France.
authors.forename: S A
authors.initials: SA
authors.lastname: Stepanyan
authors.affiliation: Skobeltsyn Institute of Nuclear Physics, Moscow State University, Moscow 119991, Russia.
authors.forename: N A
authors.initials: NA
authors.lastname: Popov
authors.affiliation: Laboratory of Plasma Physics (CNRS, Ecole Polytechnique, Sorbonne Universities, University of Pierre and Marie Curie-Paris 6, University Paris-Sud), Ecole Polytechnique, route de Saclay, Palaiseau 91128, France svetlana.starikovskaya@lpp.polytechnique.fr.
authors.forename: S M
authors.initials: SM
authors.lastname: Starikovskaia
keywords: high pressure; nanosecond plasma; surface barrier discharge