Ionization wave propagation and cathode sheath formation due to surface dielectric-barrier discharge sustained in pulsed mode  

作　　者：Konstantinos GIOTIS Panagiotis SVARNAS Eleftherios AMANATIDES Kristaq GAZELI Guillaume LOMBARDI Polykarpos K PAPADOPOULOS 

机构地区：[1]High Voltage Laboratory(Plasma Technology Room),Department of Electrical and Computer Engineering,University of Patras,Rion Patras 26504,Greece [2]Laboratoire des Sciences des Procédés et des Matériaux(LSPM—CNRS),UniversitéSorbonne Paris Nord,Villetaneuse F-93430,France [3]Plasma Technology Laboratory,Department of Chemical Engineering,University of Patras,Rion Patras 26504,Greece [4]Department of Mechanical Engineering and Aeronautics,University of Patras,Rion Patras 26504,Greece

出　　处：《Plasma Science and Technology》2023年第11期101-113,共13页等离子体科学和技术（英文版）

摘　　要：This work deals with the experimental study of a surface dielectric-barrier discharge,as a part of the ongoing interest in the control of plasma induced electro-fluid dynamic effects(e.g.plasma actuators).The discharge is generated using a plasma reactor consisting of a fused silica plate which is sandwiched between two printed circuit boards where the electrodes are developed.The reactor is driven by narrow high voltage square pulses of asymmetric rising(25 ns)and falling(2.5μs)parts,while the discharge evolution is considered in a temporarily and spatially resolved manner over these pulses.That is,conventional electrical and optical emission analyzes are combined with high resolution optical emission spectroscopy and ns-resolved imaging,unveiling main characteristics of the discharge with a special focus on its propagation along the dielectric-barrier surface.The voltage rising part leads to cathode-directed ionization waves,which propagate with a speed up to 105m s~(-1).The voltage falling part leads to cathode sheath formation on the driven electrode.Τhe polarization of the dielectric barrier appears critical for the discharge dynamics.

关 键 词：atmospheric pressure plasma surface DBD STREAMER UV-NIR optical emission spectroscopy ICCD fast imaging(Some figures may appear in colour only in the online journal) 

分 类 号：O461[理学—电子物理学]