Physics – Plasma Physics
Scientific paper
2011-03-02
Physical Review E 84, 026404 (2011)
Physics
Plasma Physics
23 pages, 3 figures
Scientific paper
10.1103/PhysRevE.84.026404
In this paper we present the complete derivation of the effective contour model for electrical discharges which appears as the asymptotic limit of the minimal streamer model for the propagation of electric discharges, when the electron diffusion is small. It consists of two integro-differential equations defined at the boundary of the plasma region: one for the motion and a second equation for the net charge density at the interface. We have computed explicit solutions with cylindrical symmetry and found the dispersion relation for small symmetry-breaking perturbations in the case of finite resistivity. We implement a numerical procedure to solve our model in general situations. As a result we compute the dispersion relation for the cylindrical case and compare it with the analytical predictions. Comparisons with experimental data for a 2-D positive streamers discharge are provided and predictions confirmed.
Arrayás Manuel
Fontelos Marco A.
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