METHOD OF MEASURING ENERGY CHARACTERISTICS OF TWO-ELECTRODE GAS SWITCHES OF PICOSECOND RANGE BY REFLECTOMETRY Russian patent published in 2024 - IPC G01R29/02 G01R31/333 

FIELD: measurement; electricity.

SUBSTANCE: invention relates to picosecond pulse equipment and is intended for measuring energy characteristics of two-electrode gas switches (GS) in the picosecond range by reflectometry. Essence: measuring the voltage wave reflected from the GS in the non-breakdown mode of the GS discharge gap (in idle mode) and a voltage wave reflected from the GS in the GS discharge gap breakdown mode with the lower part of the trailing edge lost due to the parasitic inductance of the measuring path. Lower part of the trailing edge of the voltage wave reflected from the GS in the breakdown mode of the discharge gap of the GS, which is lost during the measurements, is restored. For this purpose, at the moment of time, at which the voltage on the discharge gap GS in case of its breakdown drops to the level, when the discharge gap plasma ionization characteristic time becomes by an order greater than the voltage pulse duration applied to the GS discharge gap, time-varying resistance of the discharge gap is replaced with a constant fixed resistance. To ensure smoothness of the solution, a transient resistance function is introduced. Using the obtained dependence of the resistance of the plasma formed in the GS discharge gas gap during its breakdown; on time lower section of the trailing edge on the oscillogram of the voltage pulse reflected from the GS during its breakdown lost during the measurements by reflectometry, is restored. Using the measured voltage wave reflected from the GS in the non-breakdown mode of the GS discharge gap and the measured and further recovered voltage wave reflected from the GS in the GS discharge gap breakdown mode oscillogram of switched GS current pulse and GS energy characteristics are calculated.

EFFECT: high accuracy of obtaining an oscillogram of the discharge current in the GS and measuring the energy characteristics of the GS.

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