Eur. Phys. J. Appl. Phys.
Volume 79, Number 1, July 2017
The 15th International Symposium on High Pressure Low Temperature Plasma Chemistry (HAKONE XV)
|Number of page(s)||8|
|Section||Plasma, Discharges and Processes|
|Published online||30 May 2017|
Transition from diffuse to self-organized discharge in a high frequency dielectric barrier discharge*
LAPLACE, Université de Toulouse, CNRS, UPS, INPT, 118 route de Narbonne, 31062 Toulouse Cedex 9, France
a e-mail: firstname.lastname@example.org
Revised: 2 March 2017
Accepted: 21 April 2017
Published online: 30 May 2017
Depending on the operating conditions, different regimes can be obtained in a dielectric barrier discharge (DBD): filamentary, diffuse (also called homogeneous) or self-organized. For a plane-to-plane DBD operated at high frequency (160 kHz) and at atmospheric pressure in helium gas, we show that the addition of a small amount of nitrogen induces a transition from the diffuse regime to a self-organized regime characterized by the appearance of filaments at the exit of the discharge. In this paper, we detail mechanisms that could be responsible of the transition from diffuse mode to this self-organized mode. We point out the critical role of the power supply and the importance of the gas memory effect from one discharge to the following one on the transition to the self-organised mode. The self-organized mode is usually attributed to a surface memory effect. In this work, we show an additional involvement of the gas memory effect on the self-organized mode.
© EDP Sciences, 2017
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