Particle-in-cell simulation of Trichel pulses in pure oxygen

The development and propagation of Trichel pulses in oxygen have been numerically simulated using an improved fluid particle-in-cell (PIC) method. The numerical method has been optimized to accurately reproduce sequences of about 100 Trichel pulses (~1 ms). A classical one-dimensional model of negat...

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Bibliographic Details
Published in:Journal of physics. D, Applied physics Applied physics, 2007-08, Vol.40 (15), p.4552-4560
Main Authors: Soria-Hoyo, C, Pontiga, F, Castellanos, A
Format: Article
Language:English
Subjects:
Exact sciences and technology
Ionization of plasmas
Particle-in-cell method
Physics
Physics of gases, plasmas and electric discharges
Physics of plasmas and electric discharges
Plasma properties
Plasma simulation
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Summary:The development and propagation of Trichel pulses in oxygen have been numerically simulated using an improved fluid particle-in-cell (PIC) method. The numerical method has been optimized to accurately reproduce sequences of about 100 Trichel pulses (~1 ms). A classical one-dimensional model of negative corona in sphere-to-plane geometry has been used to formulate the continuity equations for electrons and ions. The effects of ionization, attachment and secondary-electron emission from the cathode have all been considered. The electric field has been obtained from the solution of Poisson's equation in two dimensions. Using this model, the temporal and electrical characteristics of Trichel pulses have been investigated, in particular, the relation between applied voltage, pulse frequency and time-averaged current intensity and charge.
ISSN:0022-3727
1361-6463
DOI:10.1088/0022-3727/40/15/027