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首页> 外文会议>2014 Tenth International Vacuum Electron Sources Conference >The mechanism of electrodes surface inclusions influence on vacuum insulation characteristics
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The mechanism of electrodes surface inclusions influence on vacuum insulation characteristics

机译：电极表面夹杂物影响真空绝缘特性的机理

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It is known, that vacuum gap insulation characteristics deteriorate at various types of inclusions on the electrodes surface presence. The greatest influence on the prebreakdown currents and the vacuum gap breakdown voltage are non-metallic inclusions due to the positive charge on them appearance. This charge enhances the surface electric field. There are several hypotheses to explain the vacuum gap conductivity. However, none of them confirmed the existence of such factors as: the presence of several electrons spectrums with energy lower than the Fermi level, changing the emission centres number at temperature exposion, ion irradiation effect and etc. The author suggested to consider the border of inclusions-metal contact as pores type, and to explain the phenomena observed by processes in the pores and supported by these processes Townsend discharge in vacuum gap.
机译：已知在电极表面上存在各种夹杂物的情况下，真空间隙绝缘特性变差。对预击穿电流和真空间隙击穿电压的最大影响是非金属夹杂物，因为它们的表面带有正电荷。该电荷增强了表面电场。有几种假设可以解释真空间隙电导率。然而，它们都没有证实存在以下因素：能量低于费米能级的几个电子光谱的存在，在温度暴露下改变​​发射中心数，离子辐照效应等。夹杂物与金属的接触作为孔隙类型，并解释了在孔隙中的过程中观察到的现象以及这些过程所支持的汤森德真空间隙中的放电现象。

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