红外技术
紅外技術
홍외기술
INFRARED TECHNOLOGY
2015年
4期
327-332
,共6页
潘京生%邵爱飞%孙建宁%苏德坦%陆强
潘京生%邵愛飛%孫建寧%囌德坦%陸彊
반경생%소애비%손건저%소덕탄%륙강
像增强器%微通道板%离子反馈%光阴极灵敏%信噪比%分辨力%噪声因子
像增彊器%微通道闆%離子反饋%光陰極靈敏%信譟比%分辨力%譟聲因子
상증강기%미통도판%리자반궤%광음겁령민%신조비%분변력%조성인자
image intensifier%microchannel plate%ion feedback%signal to noise ratio%resolution%photocathode sensitivity%noise figure
通过引入像增强器噪声因子的概念,对几种典型的像增强器的有效量子效率进行了评比,分析了MCP工作状态下由倍增电子引发的离子反馈对像增强器的影响,说明了无论是砷化镓光阴极像增强器,还是多碱光阴极像增强器,要实现面向四代像增强器品质因数的性能升级,实现低离子反馈低噪声因子MCP都具有同等的必要性和重要性。而通过对MCP玻璃成份的优化改进,结合对MCP基体玻璃的晶化处理,达到对MCP基体的微结构改性,抑制产生离子反馈的有害物种在MCP通道内壁表面的形成,是实现低离子反馈MCP的有效技术途径。
通過引入像增彊器譟聲因子的概唸,對幾種典型的像增彊器的有效量子效率進行瞭評比,分析瞭MCP工作狀態下由倍增電子引髮的離子反饋對像增彊器的影響,說明瞭無論是砷化鎵光陰極像增彊器,還是多堿光陰極像增彊器,要實現麵嚮四代像增彊器品質因數的性能升級,實現低離子反饋低譟聲因子MCP都具有同等的必要性和重要性。而通過對MCP玻璃成份的優化改進,結閤對MCP基體玻璃的晶化處理,達到對MCP基體的微結構改性,抑製產生離子反饋的有害物種在MCP通道內壁錶麵的形成,是實現低離子反饋MCP的有效技術途徑。
통과인입상증강기조성인자적개념,대궤충전형적상증강기적유효양자효솔진행료평비,분석료MCP공작상태하유배증전자인발적리자반궤대상증강기적영향,설명료무론시신화가광음겁상증강기,환시다감광음겁상증강기,요실현면향사대상증강기품질인수적성능승급,실현저리자반궤저조성인자MCP도구유동등적필요성화중요성。이통과대MCP파리성빈적우화개진,결합대MCP기체파리적정화처리,체도대MCP기체적미결구개성,억제산생리자반궤적유해물충재MCP통도내벽표면적형성,시실현저리자반궤MCP적유효기술도경。
The effective quantum availability of image intensifier for several typical image intensifier were evaluated by introducing a conception of noise factor of image intensifier, and the effect of ions feedback of MCP on performance of image intensifier is analyzed. Therefore, the realization of low ion feedback and low noise figure MCP for image intensifier performance to be upgraded to the fourth generation image intensifier merit figure is equally necessary and important for both GaAs photocathode image intensifier and multi-alkali photocathode image intensifier. The remodification of MCP substrate microstructure through the reformulation and devitrification treatment, and restricting ion poisoning resource formation within channel inner surface of MCP substrate, is an effective approach for the realization of low ion feedback and low noise figure MCP.