近背向散射能量空间分布的时间分辨测量技术

基于神光Ⅲ原型激光装置上建成的近背向散射诊断系统,设计了一种可探测近背向散射能量空间分布的时间过程的采集方法,并通过静态实验对该方法的可行性进行了验证。结果表明:通过一维转二维传像束,将二维图像记录成一维信息,然后通过数据后处理还原成二维图像信息的方法可以实现能量空间分布的时间分辨测量。将该方法用于近背向散射光诊断系统,可以得到近背向散射光能量空间分布随时间变化的信息,为深入分析激光等离子体相互作用实验中近背向散射光构成及变化过程提供重要数据。

Detective technology with temporal resolution for the spatial distribution of near backscatter energy

The laser inertial confinement fusion experiment can provide very important data for the research of laser-plasma interaction to detect the spatial and temporal property of the backscatter light. The backscatter diagnostic system we already have dont have temporal resolution for the spatial distribution of backscatter energy. Therefore, based on the near backscatter diagnostic system on SG-Ⅲ prototype laser facility, we proposed and designed a kind of recording method which could detect the temporal process for the spatial distribution of backscatter energy. We verified the feasibility of this method through static experiment, whose result demonstrated that it was possible to record the messages transmitted by one-dimensional to two-dimensional imaging fiber bundles and retrieve these messages to two-dimensional image by data processing.