取样成像扫描式分幅技术
Sampling-image streak framing technique
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摘要: 介绍了用于惯性约束聚变(ICF)等离子体诊断的取样成像扫描分幅技术的原理,分析了该分幅技术的有关特性参数,如曝光时间、画幅数目、空间分辨率等。借助于特别设计的扫描变像管进行了该技术的原理性实验,并利用计算机数字图像处理技术进行图像的重构。实验获得了持续时间约100ps的发光过程的16幅图像,曝光时间优于6.3ps,阴极上空间分辨率为3.5 lp/mm。Abstract: The technique of sampling-image streaking frame for plasma diagnostics in ICF is presented. Theoretical analysis of this technique, including its exposures time, framing rate and spatial resolution is given. A specially designed streak image tube, together with an active-passive mode-locked YAG laser is used to make a preliminary proof-of-principle experiment. And by means of digital image processing the experiment result gives 16 frames with an exposure time of better than 6.3ps and spatial resolution of 3.5 lp/mm in the photocathode.
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Key words:
- streak tube /
- framing camera /
- diagnosis of icf
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