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Dynamics and Structure of Nonthermal Atmospheric-Pressure Air Plasma Jets: Experiment and Simulation

Results of experimental and computational study of the dynamics and structure of atmospheric-pressure air plasma jets formed by barrier discharge in a thin dielectric tube are presented. Formation of plasma bullet-guided streamers, moving along the jet with velocity varying in the range (1-3) × 107 cm s-1, is observed. Simulation, for conditions of the experiment, gives the streamer radius, velocity, and propagation length in reasonable agreement with the experimental data.