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Abstract <p>A new method to trigger low-pressure (argon at 0.027–0.053 Pa), high-current reflective discharge forming a plasma anode of high-current electron gun was proposed and successfully tested. 2-kA discharge is initiated by electrons emitted from arc plasma sources built-in to copper disc cathode. DC voltage of 150‒311&#xa0;V, which is much lower than ignition voltage without injected electrons, was applied to the ring anode. The main characteristics of high-current electron gun with proposed scheme of a plasma anode formation have been studied.</p>

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High-Current Electron Gun with a Plasma Anode Based on Reflective Discharge Triggered from the Cathode

  • 期刊论文

  • 发表日期：

    2025年10月28日

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  • P. P. Kiziridi,
  • G. E. Ozur

摘要

Abstract

A new method to trigger low-pressure (argon at 0.027–0.053 Pa), high-current reflective discharge forming a plasma anode of high-current electron gun was proposed and successfully tested. 2-kA discharge is initiated by electrons emitted from arc plasma sources built-in to copper disc cathode. DC voltage of 150‒311 V, which is much lower than ignition voltage without injected electrons, was applied to the ring anode. The main characteristics of high-current electron gun with proposed scheme of a plasma anode formation have been studied.