K. V. Aleksandrov, L. P. Grachev, I. I. Esakov, L. G. Severinov, “An electromagnetic vibrator fixed on a screen initiates gas breakdown in the subcritical field of a microwave beam”, Pisma v Zhurnal Tekhnicheskoi Fiziki, 2014, Volume 40, Issue 6,Pages <nobr>89

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An electromagnetic vibrator fixed on a screen initiates gas breakdown in the subcritical field of a microwave beam

K. V. Aleksandrov, L. P. Grachev, I. I. Esakov, L. G. Severinov

Moscow Radiotechnical Institute of Russian Academy of Sciences

Abstract: Results of experimental investigation of the electric breakdown of air in a quasi-optical microwave beam with a deep subcritical field level are presented. The breakdown was initiated by a linear or $\Gamma$-shaped electromagnetic (EM) vibrator fixed on a screen. It is established that a vibrator positioned above the screen at a distance shorter than quarter-wavelength of the EM field can induce the electric breakdown of air at high pressures and relatively low field level. Using a $\Gamma$-shaped EM vibrator, it is possible to preset the spatial region of breakdown.

Received: 01.11.2013