Abstract—Electrical discharges; especially electrical discharges in air are still one of the most unexplored fields of the physics. Lately, there are numerical models of electrical discharges appearing, special group of which are simulations. It appeared that the finite element method (FEM) is not a good choice for simulations to base on. Instead of FEM charge simulation method (CSM) has been used in work presented by this article. A successful gap bridging has been achieved. I.INTRODUCTION Major part of known numerical models base on drift-diffusion models -. These models have strong physical background in kinetic theory. Because of that, they are very accurate but difficult so solve. One of the rare described attempts of solution has been described in . For each numerical model, experimental data is needed. We found the only suitable data for air in  but this data is unfortunately relatively dull and have low accuracy. If we want to solve diffusive-drift model we also have to introduce some simplifications including geometrical simplifications into model. Other group of numerical models, which does not have
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