Abstract

The features of the use of electron sources based on thermal and field emission in devices of electrovacuum production are considered, including the preservation of the emissive capacity when the operating conditions in a vacuum deteriorate. It is shown that the advantage of metalloporous hot cathodes is the high reduction ability of emission after the device is repeatedly pumped out to the initial pressure. An advantage of high-current field cathodes based on composite diamond-graphite film structures is the stability of the field emission characteristics in a wider range of pressure variations in the device. This improves the operational characteristics of the electrovacuum device (EVD) in the absence of built-in pumping facilities.

中文翻译：

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在真空中运行的热和冷场阴极的发射特性的稳定性

摘要

考虑了在真空生产设备中使用基于热和场发射的电子源的特征，包括在真空中的工作条件恶化时保持发射容量。结果表明，金属多孔热阴极的优点是在将装置反复泵出至初始压力后具有高的还原能力。基于复合金刚石-石墨薄膜结构的高电流场阴极的一个优点是在更宽范围的设备压力变化范围内场发射特性的稳定性。在没有内置抽水设备的情况下，这改善了电真空设备（EVD）的运行特性。