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Abstract <p>Regimes of two-electrode high-voltage high-pressure nanosecond switches operation have been analyzed. It is shown that the switches unstable operation mainly determined by two reasons: unstable origination of initial electrons from pulse to pulse and gas-dynamic perturbations in conditions, when the switch operates in high-frequency mode. Both the reasons lead to the decrease of pulsed breakdown voltage as compared to the static breakdown voltage. Essential decrease of pulsed breakdown voltage occurs in conditions, when an average electric field in the switch exceeds 400 kV/cm and discharge is initiated due to field-emission current from the cathode.</p>

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Operating Stability of a High-Pressure Two-Electrode Spark Gaps at a Voltage of Several Hundred Kilovolts

  • 期刊论文

  • 发表日期：

    2025年9月1日

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  • N. V. Landl,
  • Y. D. Korolev,
  • V. V. Rostov,
  • V. F. Landl,
  • A. S. Stepchenko,
  • A. A. Grishkov

摘要

Abstract

Regimes of two-electrode high-voltage high-pressure nanosecond switches operation have been analyzed. It is shown that the switches unstable operation mainly determined by two reasons: unstable origination of initial electrons from pulse to pulse and gas-dynamic perturbations in conditions, when the switch operates in high-frequency mode. Both the reasons lead to the decrease of pulsed breakdown voltage as compared to the static breakdown voltage. Essential decrease of pulsed breakdown voltage occurs in conditions, when an average electric field in the switch exceeds 400 kV/cm and discharge is initiated due to field-emission current from the cathode.