真空中大面积不锈钢阴极表面击穿发射点的研究

XXIst International Symposium on Discharges and Electrical Insulation in Vacuum, 2004. Proceedings. ISDEIV. Pub Date : 2004-09-27 DOI:10.1109/DEIV.2004.1418595

A. Batrakov, D.J. Johnson, S. Onischenko, D. Proskurovsky

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引用次数: 1

摘要

本文介绍了真空中预击穿发射的研究结果，以及不锈钢平面平行电极形成的间隙击穿与预击穿发射位点的关系。利用阳极扫描探针识别直径为8cm的平面阴极的发射位点，重建发射图。在识别出发射位点后，施加60-ns 220-kV的高压方波并闭合间隙直至击穿。在实验中发现阴极发射位点是导致电击穿的主要原因，其截留电场基本上低于1 MV/cm。在真空间隙绝缘能力较好的情况下，阳极对间隙电绝缘的影响较大。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Investigation of breakdown emission sites on the surface of large-area stainless-steel cathodes in vacuum

The paper describes the results of study of prebreakdown emission in vacuum and correlations between prebreakdown emission sites and breakdown of gaps formed by plane-parallel electrodes made of stainless steels. Anode-scanning probe vas used for recognizing emission sites and reconstructing emission maps of 8-cm-diameter plane cathodes. After recognizing emission sites, high-voltage 60-ns 220-kV square pulses were applied with closing a gap until breakdown occurs. Cathode emission sites were found experimentally to be responsible for electrical breakdown at hold-off electric field essentially below 1 MV/cm. In a case of better insulating ability of a vacuum gap, the anode becomes more influencing on electrical insulation of a gap.

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来源期刊

XXIst International Symposium on Discharges and Electrical Insulation in Vacuum, 2004. Proceedings. ISDEIV.

CiteScore

0.40

自引率

0.00%

发文量