摘要
为提高分幅相机的时间分辨率,采用无增益微通道板(microchannel plate,MCP)代替有增益MCP研制分幅相机.利用Monte Carlo方法对无增益MCP的时间分辨特性、渡越时间弥散及空间分辨特性进行了理论研究.结果表明,无增益MCP的时间分辨率随着选通脉冲宽度的减小而提高,无增益MCP中电子的渡越时间弥散小于有增益MCP的渡越时间弥散.无增益MCP变像管的空间分辨率优于有增益MCP变像管的空间分辨率.因而,无增益MCP可以减小电子的渡越时间弥散,获得更好的时间分辨率.
To improve the temporal resolution of the framing camera,a non-gain microchannel plate(MCP)instead of a gain MCP is used to study the framing camera.The temporal resolution,the transit time spread,and the spatial resolution of the non-gain MCP are simulated by using the Monte Carlo method.The simulated results show that the temporal resolution of the non-gain MCP increases with the decrease of the gating pulse width.And the transit time spread in the non-gain MCP is lower than that in the gain MCP.Furthermore,the spatial resolution in the non-gain MCP is better than that in the gain MCP.Therefore,the non-gain MCP could reduce the transit time spread,and obtain the better temporal resolution for the framing camera.
作者
张珂
蔡厚智
刘进元
ZHANG Ke;CAI Houzhi;LIU Jinyuan(Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University,Shenzhen 518060,Guangdong Province,P.R.China)
出处
《深圳大学学报（理工版）》
EI
CAS
CSCD
北大核心
2018年第5期500-504,共5页
Journal of Shenzhen University(Science and Engineering)
基金
国家自然科学基金资助项目(11775147)
深圳市科技计划资助项目(JCYJ20170302153912966
JCYJ20160608173121055)
深圳大学新引进教师科研启动资助项目(2017015)~~
关键词
X射线光学
分幅相机
无增益微通道板
时间分辨率
渡越时间弥散
惯性约束聚变
X-ray optics
framing camera
non-gain microchannel plate
temporal resolution
transit time spread
inertial confinement fusion
