The effect of the stochasticity of photoionization on 3D streamer simulations
The effect of the stochasticity of photoionization on 3D streamer simulations
Positive streamer discharges require a source of free electrons ahead of them for their growth. In air, these electrons are typically provided by photoionization. Here we investigate how stochastic fluctuations due to the discreteness of ionizing photons affect positive streamers in air. We simulate positive streamers between two planar electrodes …