Abstract

The factors limiting the durability of high-current field sources of electrons based on nanocomposite diamond-graphite film structures under nonstationary temperature-vacuum operating conditions are established and interpreted. It is found that high-current emission is accompanied by the sputtering of residual gas ions from the vacuum system of atoms of the autocathode material and its redeposition onto the anode. It is shown that the deposited material on the anode by changing the voltage polarity in the interelectrode gap can be redeposited onto the cathode electrode with the restoration of its original emissivity.

中文翻译：

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基于纳米复合金刚石-石墨薄膜结构的高电流场电子源的耐久性

摘要

建立并解释了在非平稳温度-真空操作条件下限制基于纳米复合金刚石-石墨薄膜结构的高电流场电子源耐久性的因素。研究发现，大电流发射伴随着来自自阴极材料原子真空系统的残余气体离子的溅射及其再沉积到阳极上。结果表明，通过改变电极间隙中的电压极性，沉积在阳极上的材料可以重新沉积到阴极上，并恢复其原始发射率。