摘要
优化设计和研制了一种旨在获得大的动态范围的皮秒时间分辨软X射线扫描相机系统.该相机阴极有效面积Φ30mm,聚焦电压8kV,有效防止了打火对动态范围的影响;摒弃了微通道板内增强器,引入了后加速系统,以保证足够高的荧光屏量子效率;采用了大动态范围的像增强器进行图像外增强.借助于皮秒激光器动态测试和标定系统对其性能进行了实验评价,获得了动态范围大于2000的结果.
A new streak camera with more wider dynamic range and picosecond temporal resolution for soft X-ray was developed.The photocathode′s working area is 30 mm in diameter,and its focusing voltage is reduced to 8 kV to prevent electrical discharge.A post-accelaration system was introduced into the image tube for improving the phosphor screen′s quantum efficiency largely,and an external image intensifier with wide dynamic range was adopted.Experimental evaluation was carried out by means of a picosecond laser,and the results show that the dynamic range of more than 2000 can be achieved.
出处
《光子学报》
EI
CAS
CSCD
北大核心
2010年第12期2190-2193,共4页
Acta Photonica Sinica
基金
国家高技术研究发展计划(2008AA8040071)资助
关键词
动态范围
后加速
外增强
扫描相机
Dynamic range
Post-accelaration system
External image intensifing
Streak camera
