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A Full 3-D Dynamically Adaptive Unstructured Grid Finite-Volume Approach to Simulate Multiple Branching in Streamer Propagation

Electron-spot-induced multiple branching and trajectory deviation of streamer microdischarges in air was simulated using a 3-D unstructured adaptive mesh finite-volume approach along with the air plasma streamer model proposed by Morrow et al. Images illustrating the effect of electron spots on the propagation trajectory, i.e., deviation, simple branching, multiple branching, are presented and commented.