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[Comparative study on current and light emission for different modes in dielectric barrier discharge]
Xue-Chen Li1, Na Zhao, Zhi-Hui Liu
1College of Physics Science and Technology, Hebei University, Baoding 071002, China. xcli@mail.hbu.edu.cn
Guang Pu Xue Yu Guang Pu Fen Xi = Guang Pu
|May 19, 2009
Summary
Investigating dielectric barrier discharge (DBD) dynamics is crucial. Analyzing light emission waveforms offers a reliable method for understanding discharge dynamics, especially when current signals are weak.
Area of Science:
- Plasma Physics
- Electrical Engineering
Context:
- Dielectric barrier discharge (DBD) is a complex plasma phenomenon.
- Understanding discharge dynamics is essential for controlling plasma properties and applications.
- Previous methods struggled to discern weak discharge currents from displacement currents.
Purpose:
- To investigate the relationship between light emission and current waveforms in different dielectric barrier discharge modes.
- To determine the feasibility of using light emission analysis for studying discharge dynamics, particularly in weak current regimes.
Summary:
- Different discharge modes (stochastic filament, hexagon pattern, homogeneous diffusion) were generated using water electrodes in air and Ar.
- Waveform analysis revealed that light emission and current waveforms correlate strongly with high discharge signals.
- For weak currents, light emission waveforms provide a clearer picture of discharge dynamics than current measurements alone, enabling single filament analysis.
Impact:
- Establishes light emission waveform analysis as a viable and effective method for investigating discharge dynamics in dielectric barrier discharges.
- Offers a solution for studying plasma behavior in regimes where traditional current measurements are obscured.
- Facilitates better control and optimization of dielectric barrier discharge processes for various applications.
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