Volume 108, Number 3, November 2014
|Number of page(s)||6|
|Section||Physics of Gases, Plasmas and Electric Discharges|
|Published online||11 November 2014|
Spatiotemporal characteristics of a patterned dielectric barrier discharge controlled by various mechanisms
1 College of Physics Science and Technology, Hebei University - Baoding 071002, PRC
2 College of Quality and Technical Supervision, Hebei University - Baoding 071002, PRC
3 Hebei Key Laboratory of Optic-electronic Information Materials - Baoding 071002, PRC
4 School of Physics, Beijing Institute of Technology - Beijing 100081, PRC
Received: 12 July 2014
Accepted: 13 October 2014
In this paper, we present a comprehensive discussion on various mechanisms collectively controlling the spatiotemporal characteristics of a patterned dielectric barrier discharge. High-speed images correlated with current pulse phases show that the square pattern is composed of two interleaving square sublattices with a time-reversal symmetric discharge order, whose spatial and temporal stabilities are explained by surface-charge–induced activation-inhibition mechanism. Images of 100 ns order demonstrate the localized synchronicity of the development of one single sublattice, which may be attributed to photo-ionization. Through the investigation of light emissions of the two sublattices, a surface-charge sharing mechanism is proposed, which is also responsible for the stability of the patterned discharge.
PACS: 52.80.Tn – Other gas discharges / 47.54.-r – Pattern selection; pattern formation / 52.70.Kz – Optical (ultraviolet, visible, infrared) measurements
© EPLA, 2014
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