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主动式冲击波双灵敏度精密诊断技术是惯性约束聚变物理实验精密化的关键技术之一,其主要功能是精密诊断惯性约束聚变中多个整形脉冲产生的冲击波加载、追赶的速度历程。对基于神光Ⅲ原型的成像型速度干涉仪技术进行了较全面的介绍。主要包括具有快速自校准能力的高分辨成像技术,束靶耦合物理对象分析与靶型设计技术,高置信度图像提取处理技术等关键技术。该系统空间分辨达到5μm、时间分辨10~30ps、测速不确定度小于2%,可对透明介质材料中的多次冲击过程进行连续测量。
Active shock wave dual-sensitivity precision diagnostic technique is one of the key technologies of inertial confinement fusion physics experiment precision. Its main function is to accurately diagnose the speed of shock wave loading and catch-up caused by multiple shaping pulses in inertial confinement fusion. The imaging type speed interferometer technology based on the prototype of SG-Ⅲ is introduced in more comprehensive way. Mainly include high-resolution imaging technology with rapid self-calibration ability, target-coupled physical object analysis and target design techniques, and high confidence image extraction and processing technologies. The spatial resolution of the system is 5μm, the time resolution is 10 ~ 30ps and the speed uncertainty is less than 2%. The system can measure the multiple impact processes in the transparent medium continuously.