电极表面状态对像增强器耐压性能的影响

发布时间：2018-02-02 11:53

本文关键词： 像管场致发射表面状态耐压性能　出处：《真空科学与技术学报》2017年06期 　论文类型：期刊论文

【摘要】：像增强器(简称像管)的耐压性能是影响其增益,背景噪声和分辨力的一个重要因素。引起像管电击穿的原因很多,其中,电极的表面形态在其击穿的起始阶段发挥着重要的作用。本文针对像管特有的高场强微间隙电场结构,通过对不同电极进行耐压测试实验,研究其对像管耐压性能的影响。运用表面形貌测试仪对电极表面进行3D形貌测试,结果表明电极表面微凸起形状和尺寸的不同对像管耐压性能的影响差异显著,提高材料表面光洁度对于提高像管耐压性能有着重要的促进作用,最终为突破高场强微间隙像管工艺制作技术提供理论依据。
[Abstract]:The voltage performance of image intensifier is an important factor affecting its gain, background noise and resolution. There are many reasons for the breakdown of image tube. The surface morphology of the electrode plays an important role in the initial stage of breakdown. In this paper, the characteristics of the high field microgap electric field structure of the image tube are tested by the voltage test of different electrodes. The effect on the voltage resistance of the image tube was studied. The 3D morphology of the electrode surface was measured by using the surface topography tester. The results show that the different shape and size of the electrode surface have a significant effect on the voltage resistance of the image tube. Improving the surface finish of the material plays an important role in improving the voltage resistance of the image tube. Finally, it provides a theoretical basis for breaking through the fabrication technology of high field microgap image tube.
【作者单位】：微光夜视技术重点实验室;北方夜视科技集团有限公司;
【基金】：微光夜视技术重点实验室项目(GY201627)
【分类号】：TN144
【正文快照】： 真空中距离较短的电极之间,加以高电压,常会出现微弱的极间电流,随着极间电压的不断增大直至某一定值时,极间电流急剧增大,并伴随有轻微的火花放电现象,即发生了真空击穿。击穿时,极间绝缘性能全部被破坏,极间电流可逾数千安[1]。军用微光夜视仪的核心器件—微光像增强器(简称

【相似文献】