Construction and test of a moving boundary model for negative streamer discharges

Details Construction and test of a moving boundary model for negative streamer discharges Construction and test of a moving boundary model for negative streamer discharges

2007-07-10

arxiv.org/abs/0707.1402v1

Phys. Rev. E 77, 026219 (2008)

Physics

Plasma Physics

10 pages, 7 figures; submitted to Phys. Rev. E

Scientific paper

10.1103/PhysRevE.77.026219

Starting from the minimal model for the electrically interacting particle densities in negative streamer discharges, we derive a moving boundary approximation for the ionization fronts. The boundary condition on the moving front is found to be of 'kinetic undercooling' type. The boundary approximation, whose first results have been published in [Meulenbroek et al., PRL 95, 195004 (2005)], is then tested against 2-dimensional simulations of the density model. The results suggest that our moving boundary approximation adequately represents the essential dynamics of negative streamer fronts.

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