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.

中文翻译：

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高斯微波束在空气波产生的亚阈值场中的自作用

摘要-

微波束（波长 4 毫米，功率 150-300 千瓦）在亚阈值场中的空气中产生电离波，呈线状通道的集合体，向光束移动。光束的外围在非自持放电的等离子体中折射，在线状放电的 UV 晕中，并在由线状通道组成的等离子体团前面后面的重组等离子体中自聚焦。波束外围区域的自聚焦导致领先等离子体团前面后面的局部电离爆发。