In situ characterization technique of fuel ice layer for ICF cryotargets
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摘要: 背光阴影成像是表征ICF冷冻靶燃料冰层的有效方法。基于背光阴影成像技术，冷冻靶燃料冰层原位表征技术能原位实时监测靶丸内燃料气体相变与冰层均化过程，得到打靶零前时刻燃料冰层厚度和粗糙度信息，为物理实验提供准确参数。在冷冻靶制备实验中，根据背光阴影成像的光线追迹模型和实验测得的阴影图像中的亮环位置，计算得到了均化后冷冻靶中燃料冰层的厚度以及内表面粗糙度。Abstract: Backlit shadowgraphy is an effective method for characterizing fuel ice in ICF cryotargets. Based on backlit shadowgraphy, the ice layer in situ characterization system can monitor the phase transformation and ice layering process of fuel in real-time as well as provide thickness and roughness of fuel ice before target shooting for physical experiments. In the experiments of cryotarget preparation, the thickness and inner roughness of fuel ice layer were calculated by the ray tracing simulation of backlit shadowgraphy and the position of bright ring in shadowgraph.
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Key words:
- inertial confinement fusion /
- cryotargets /
- backlit shadowgraphy /
- ray tracing
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