Physics – Plasma Physics
Scientific paper
2011-01-18
Physics
Plasma Physics
4 pages, 2 figures
Scientific paper
In this letter we propose a Turing model of the formation of patterns of visible light emission intensity in atmospheric pressure gas discharges. The electron density and the electron temperature take the roles of activator and inhibitor respectively in a two-reactant Turing model, with the activator diffusion coeffcient being much smaller than that of the inhibitor, and ionization and excitation from excited state atoms considered as the dominant reaction processes. The model predicts striations in a 1D system, which quantitatively agree with experimental results in terms of the spatial variation scale lengths. Additionally, the model also predicts changes in the discharge structure observed experimentally when input power and gas pressure are varied.
Chen Xi
Iza F.
Lieberman M. A.
Pu Yi-Kang
Zhou Yao
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