Abstract—
A microwave beam (wavelength 4 mm, power 150–300 kW) generates an ionization wave in air in the subthreshold field in the shape of a conglomerate of thread-like channels that moves toward the beam. The periphery of the beam refracts in the plasma of the non-self-sustained discharge in the UV halo of the thread-like discharges and self-focuses in the recombining plasma behind the front of the plasmoid that consists of thread-like channels. The self-focusing of the peripheral regions of the wave beam causes local bursts of ionization behind the front of the leading plasmoid.
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This work was supported by the Russian Science Foundation, project no. 17-12-01352-p.
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Batanov, G.M., Borzosekov, V.D., Kolik, L.V. et al. Self-Action of a Gaussian Beam of Microwaves in the Subthreshold Field Generated by the Waves in Air. Plasma Phys. Rep. 47, 598–602 (2021). https://doi.org/10.1134/S1063780X21060015
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DOI: https://doi.org/10.1134/S1063780X21060015