红外与激光工程, 2018, 47 (6): 0624002, 网络出版: 2018-09-08   

高时间分辨分幅成像技术分析及性能测试

Analysis and performance test of the high temporal resolution framing imaging technology
作者单位
桂林电子科技大学 教学实践部, 广西 桂林 541004
摘要
为获取更多惯性约束聚变内爆运动信息和测量聚变燃烧阶段等离子体的时空特性, 以微通道板(MCP)选通分幅变像管为基础, 采用电子束时间展宽技术和组合透镜成像技术, 研制了曝光时间优于30 ps的分幅变像管, 并通过变像管结构、工作原理和实验测试分析了2类像管性能差异的原因。研究结果显示, MCP选通分幅变像管具有良好的空间分辨性能, 而采用新技术的变像管则具有更优秀的时间分辨性能, 实验测试获得MCP选通分幅变像管的曝光时间和空间分辨率分别为97 ps和~53 μm(调制度为4%), 而采用新技术的分幅变像管分别为和21 ps和~74 μm(调制度为3%)。高时间分辨分幅成像技术的应用可为惯性约束聚变的研究提供更多的可信数据。
Abstract
In order to obtain more implosion movement information of inertial confinement fusion and measure the temporal-spatial characteristics of plasma during fusion combustion phase, the framing tube was studied whose exposure time was better than 30 ps, using electron beam pulse-dilation and composite lenses imaging technology. The reason of performance difference between two tubes was analyzed through the tubes structure, working principle and measurement. The study result shows that the MCP gated framing tube has better spatial resolution performance and the new framing tube has more excellent temporal resolution performance. The spatial resolution and exposure time of MCP gated framing tube is ~53 μm(the modulation is 4%) and 97 ps, respectively. And, the new framing tube is ~74 μm(the modulation is 3%) and 21 ps, respectively. The mass reliable data is provided to study inertial confinement fusion through the high temporal resolution framing imaging technology.

白雁力, 姚荣彬, 高海英, 党选举, 何国民. 高时间分辨分幅成像技术分析及性能测试[J]. 红外与激光工程, 2018, 47(6): 0624002. Bai Yanli, Yao Rongbin, Gao Haiying, Dang Xuanju, He Guomin. Analysis and performance test of the high temporal resolution framing imaging technology[J]. Infrared and Laser Engineering, 2018, 47(6): 0624002.

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