利用微加工工艺提高空间行波管收集极效率

发布时间：2018-01-12 02:20

本文关键词：利用微加工工艺提高空间行波管收集极效率　出处：《中国空间科学技术》2017年02期 　论文类型：期刊论文

【摘要】：针对二次电子发射系数对空间行波管收集极效率的影响,通过降低二次电子发射系数的方法,提高收集极的效率。并以无氧铜为例,使用化学刻蚀的方法对无氧铜样片进行表面处理,得到规则微孔阵列结构。使用二次电子发射测试平台对有无表面处理的无氧铜样片进行测量。测量结果显示,经化学刻蚀处理后的样片的最大二次电子发射系数由1.33减小到0.96,二次电子发射抑制效果明显。将测得的两个二次电子发射系数曲线用于空间行波管收集极的模拟设计中。选用已有的3个收集极结构模型,使用模拟软件进行仿真并计算收集极效率。结果表明,3个收集极结构模型的效率分别由原来的80.1%、57.5%、42.1%提高到82.55%、62.6%、59.2%。该结果对于空间行波管收集极的设计具有重要参考价值。
[Abstract]:Aiming at the influence of the secondary electron emission coefficient on the collector efficiency of the space traveling wave tube, the efficiency of the collector is improved by reducing the secondary electron emission coefficient, and the oxygen free copper is taken as an example. The surface of oxygen free copper sample was treated by chemical etching and the regular microporous array structure was obtained. The oxygen free copper sample with or without surface treatment was measured by using the secondary electron emission test platform. The maximum secondary electron emission coefficient of the sample after chemical etching was reduced from 1.33 to 0.96. The second electron emission suppression effect is obvious. The two secondary electron emission coefficient curves are used in the simulation design of spatial travelling-wave tube collector. The existing three collector structure models are selected. The results show that the efficiency of the three collector structure models is increased from 80.1% to 42.1% respectively. The results have important reference value for the design of collecting poles of space traveling wave tube.
【作者单位】：中国空间技术研究院西安分院空间微波技术重点实验室;西安交通大学电子与信息工程学院;
【基金】：国家自然科学基金重点项目(U1537211);国家自然科学基金面上项目(11675278);国家自然科学基金面上项目(51675421)
【分类号】：TN124
【正文快照】： 网络出版地址:http:∥kns.cnki.net/kcms/detail/11.1859.V.20170321.1543.008.html引用格式:白春江,崔万照,叶鸣,等.利用微加工工艺提高空间行波管收集极效率[J].中国空间科学技术,2017,37(2):61-65.BAI C J,CUI W Z,YE M,et al.Improving the efficiency of the collector o

【相似文献】