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Sci Rep. 2015 Nov 10;5:16391. doi: 10.1038/srep16391.

Prediction of nested complementary pattern in argon dielectric-barrier discharge at atmospheric pressure.

Author information

1
State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an 710119, China.
2
Faculty of Mathematics and physics, Huaiyin Institute of Technology, Huaian 223003, China.
3
Research Center of Analytical Instrumentation, Sichuan University, Chengdu 610064, China.

Abstract

A two-dimensional self-consistent fluid model was employed to investigate the spatiotemporal nonlinear behavior in an argon glow-like/Townsend-like dielectric-barrier discharge (DBD) at atmospheric pressure. The discharge is characterized by a major current pulse with a residual one ahead per half cycle of the external voltage. The two current pulses are operated in glow mode, but with Townsend mode between them. Contrasting spatial discharge structures are complementarily presented not only at two current pulses in the same half cycle but also during the discharge in the two adjacent-half cycles, resulting in the formation of a unique nested complementary pattern each cycle. This peculiar behavior mainly lies in the fact that sufficient charged particles are trapped in the gas gap due to the last discharge and able to dominate the subsequent discharge through the "spatial memory effect". The charge transport regime reveals that this nested complementary pattern is presented only in a limited range of driving frequency.

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