The validity of the one-dimensional fluid model of electrical breakdown in synthetic air at low pressure
Department of Physics, Faculty of Sciences and Mathematics, University of Niš - PO box 224, Niš, Serbia
Received: 30 September 2013
Accepted: 12 December 2013
In this letter the validity of the fluid model used to simulate the electrical breakdown in air at low pressure is discussed. The new method for the determination of the ionization source term for the mixed gases is proposed. Paschen's curve obtained by the fluid model is compared to the available experimental data. The electron and ions density profiles calculated by the fluid model are presented. Based on Ohm's law, the current and voltage waveforms are calculated and compared to the ones measured by the oscilloscope in the synthetic-air filled tube with stainless-steel electrodes. It is shown that the one-dimensional fluid model can be used for modeling the electrical breakdown at pd values higher than Paschen's minimum and to determine stationary values of electron and ions densities.
PACS: 51.50.+v – Electrical properties (ionization, breakdown, electron and ion mobility, etc.) / 52.65.-y – Plasma simulation / 52.80.Dy – Low-field and Townsend discharges
© EPLA, 2013