Abstract
The goal of this work is to check numerically whether or not the previously proposed mechanism for surface barrier discharge filamentation in nitrogen in the case of positive polarity nanosecond voltage pulse is applicable for similar process in nitrogen and air in the case of negative voltage polarity pulse. The results have shown, that in this case some signs of successful filamentation modeling are present both in nitrogen and air, but the whole dynamics of discharge development is qualitatively different from that one observed in experiment. It is assumed, that the failure of simulation is due to the usage of local field approximation, which is too rough inside a region with steep electron density gradient relevant to filamentation zone.
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