【作者】 潘京生； 吕景文； 李燕红； 周建勋；

【Author】 PAN Jingsheng1,3,LV Jingwen1,LI Yanhong2,3,ZHOU Jiangxun3 1School of Materials Science and Engineering,Changchun University of Science and Technology,Jilin,Changchun130022;2School of Information Science and Technology,Beijing Institute of Technology,Beijing1000813North Night Vision Tech.Group Corp.,Low Light Component Centre,Nanjing Division,Jiangsu,Nanjing211102

【机构】 长春理工大学材料科学和工程学院； 北方夜视技术集团公司微光器件中心南京分部； 北京理工大学光电学院；

【摘要】 虽然砷化镓光阴极的量子效率大大优于超二代多碱光阴极,但由于三代像增强器中微通道板(Microchannel Plate,MCP)输入面上的离子阻挡膜的存在,三代像增强器相比于超二代像增强器,就品质因素而言优势并不明显,甚至是伯仲难分。无膜MCP三代像增强器已经出现,但其可靠性和噪声因子存在不足,本文强调了实现无膜MCP三代像增强器的必要性,介绍了目前的无膜MCP三代像增强器采用的对MCP离子反馈的抑制方法及其所存在的不足,并分析了实现高可靠性高性能无膜MCP三代像增强器的技术可行性和技术途径,研究证明通过MCP玻璃成份和微结构的优化,可进一步地减少MCP中的有害物种含量,并改善MCP耐电子清刷除气能力。指出在对MCP玻璃成份和微结构进一步优化以改善MCP性能的基础上,结合先进的像增强器选通电源的应用,是实现高可靠性高性能无膜MCP三代像增强器的有效技术途径。更多还原

【Abstract】 Although gallium Arsenic photocathode demonstrate an excellent quantum efficiency superior to super S-25 multialkali photocathode,but for the figure of merit of image intensifier tube(IIT),the generation 3 IIT and Generation 2++ IIT have compatible parameter even no difference.The filmless MCP generation 3 IITs have emerged,but the problem remains that which unsufficient of reliability and noise factor.In this paper,the necessity of realization of filmless MCP generation 3 image IIT is stressed,and the problem remains in currently filmless MCP generation 3 IIT as well as the method which adopted to eliminate and suppress the ions feedback from MCP were introduced,the feasibility and technology approach for high reliability high performance filmless MCP generation 3 IIT was analyzed,it was shown in our experimental research,a significant improvement of MCP’s endurance capability of electron scrub degases treatment and further reduction of the number of poison species contained in MCP’s substrate can be achieved by mean of the optimization of the composition and micro structure of MCP glass,so it is possible to manufacture a high reliability high performance filmless MCP generation 3 IIT through further optimization of reformulated composition and modified microstructure glass MCP,incorporate in an advanced autogated power supply.更多还原