Dynamics of pattern formation in dielectric barrier discharge with transparent electrodes

Lifang Dong; Xuechen Li; Pengying Jia

doi:10.1117/12.790727

22 February 2008 Dynamics of pattern formation in dielectric barrier discharge with transparent electrodes

Lifang Dong, Xuechen Li, Pengying Jia

Proceedings Volume 6622, International Symposium on Photoelectronic Detection and Imaging 2007: Laser, Ultraviolet, and Terahertz Technology; 662209 (2008) https://doi.org/10.1117/12.790727
Event: International Symposium on Photoelectronic Detection and Imaging: Technology and Applications 2007, 2007, Beijing, China

Abstract

Spatio-temporal patterns in nonlinear system have been paid much attention in resent years. Among different nonlinear systems, gas discharge system is more remarkable because proper time scale and abundance in pattern structures. In this article, pattern formation dynamics is studied in a dielectric barrier discharge system with mixed working gas of argon and air at pressure of 0.6 atm by optical method. A boundary condition of square structure is used in the experiments. The experimental results show that the discharge pattern with increasing the applied voltage undergoes a scenario: uniform discharge, hexagon structure, stochastic micro-discharge filaments, hexagon structure again, square pattern, regular stripes that bridge the boundary, and uniform discharge again. The emission signals from the discharge in different pattern are detected by photomultiplier tubes and results show that the waveform of total light signals under low voltage lower than the voltage of stochastic micro-discharge filaments is only one pulse at each half cycle of the applied voltage, while it shows two pulses at each half cycle of the applied voltage in the second hexagon pattern and square pattern, and more pulses appear in the stripe pattern discharge and second uniform discharge. Through analyzing the temporal sequence of the different filaments in a hexagon, it can be concluded that the hexagon pattern is an interleaving of two rectangular sub-patterns that the micro-discharge filaments in a sub-pattern volley almost at the same time. The temporal sequence of the two sub-patterns in consecutive half cycle alternates.

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Lifang Dong, Xuechen Li, and Pengying Jia "Dynamics of pattern formation in dielectric barrier discharge with transparent electrodes", Proc. SPIE 6622, International Symposium on Photoelectronic Detection and Imaging 2007: Laser, Ultraviolet, and Terahertz Technology, 662209 (22 February 2008); https://doi.org/10.1117/12.790727

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KEYWORDS

Electrodes

Dielectrics

Complex systems

Stochastic processes

Signal detection

Argon

Bridges

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