Application of thermal effect of infrared light to forming uniform DD layers in spherical cryotarget
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摘要: 基于激光惯性约束聚变对冷冻靶燃料冰层质量的要求和红外光热效应原理，研究了红外光对球形冷冻靶燃料冰层结构和空间分布的影响。研究结果表明：在波长为3140 nm,输出功率为100 W的红外光辐射加热作用下，冷冻靶燃料冰层在结构上逐渐由多晶向准单晶转变，在空间分布上逐渐变得均匀，其光学图像上的表现为出现了背光亮环。通过对亮环的分析计算，获得了其冰层的均方根粗糙度值。Abstract: Based on the request of the solid fuel in inertial confinement fusion (ICF) capsule and the thermal effect of infrared (IR) light, the IR lights function of changing the spatial distribution and micro-structure of solid deuterium is studied. It is found that with the special IR light (3140 nm, 100 W), the micro-structure of solid deuterium is changed from polycrystal to monocrystal, the solid deuterium is redistributed and becomes more uniform. The exhibition of optical image is that a distinct bright band appears. By analysis of the bright band, the RMS surface roughness of the solid deuterium is calculated.
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