物理学报2013，Vol.62Issue(1)：198-204,7.DOI:10.7498/aps.62.014206
前近贴脉冲电压对三代微光像增强器halo效应的影响
Effect of pro-proximity pulse voltage on the third-generation low light level image intensifiers halo effect
摘要
Abstract
In order to explore the proper working voltage for the third-generation low light level image intensifies the influence of pro-proximity pulse voltage on image intensifier halo effect is investigated. The pulse voltage is applied to photocathode of image intensi-fier. Respectively change the high and low level voltage and duty ratio, image intensifier halo images are collected by high-resolution charge-coupled device (CCD). The gray distributions for pixel points on halo image central line are given and comparatively analyzed. The results show that as high level voltage and duty ratio increase, the number of pixel points whose gray value is 255 increases and the border between signal and background becomes clear. When high level voltage is above 200 V and duty ratio is above 60%, the pro-proximity voltage has not great influence on image intensifier halo effect. When low level voltage is above 2 V, photoelectrons escaping from photocathode cannot reach microchannel plate under low level voltage stage. The present investigation is beneficial to the exploration of the optimal working voltage for image intensifier and energy range of photoelectrons escaping from photocathode, and provides an experimental support for the improvement of the third-generation low light level image intensifier performance.关键词
微光像增强器/halo/前近贴/脉冲电压Key words
low light level image intensifies/ halo/ pro-proximity/ pulse voltage引用本文复制引用
任玲,石峰,郭晖,崔东旭,史继芳,钱芸生,王洪刚,常本康..前近贴脉冲电压对三代微光像增强器halo效应的影响[J].物理学报,2013,62(1):198-204,7.基金项目
微光夜视技术重点实验室基金(批准号:J20110301)和江苏省高等学校研究生科研创新计划(批准号:CXLX11_0236)资助的课题. （批准号:J20110301）
