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Nonlinear Electrodynamic Effects of the Torch Discharge Argon Plasma

The measurements of the amplitude-frequency characteristics were done for the high-frequency torch discharge burning in argon. The resonant character of the electric field fourth harmonic attenuation was found. The axial harmonics distribution measurements of the electric field were done for the torch discharge burning in argon-air mixture. The electron concentration in the investigated plasma discharge was evaluated. The selective influence of the change in the electron concentration on the propagation process of the fourth harmonic of the electric field was found.