内爆实验图像处理中的勒让德拟合方法
Legendre fitting method in image processing of implosion experiments
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摘要: 为了满足惯性约束聚变(ICF)驱动对称性调节和测量的需要，采用勒让德多项式拟合方法处理实验图像数据。该方法结合了辐射驱动对称性的相关理论，用于分析内爆实验中获得的靶芯压缩图像。通过对一系列实验数据进行处理，详细对比了新旧两种实验图像处理过程。结果表明：与目前使用的图像处理方法相比，勒让德拟合方法降低了误差，并获得了以往忽略的不对称性高阶部分信息。Abstract: In order to meet the requirement of symmetry tuning and measurement in implosion experiment, a image processing method has been adopted. This method is based on Legendre fitting, with the theory of radiation drive symmetry，which help the analysis of compressed core image. Through a series of data analysis, a detailed comparison of two methods has been processed. The results show the error of the new method is smaller than that of the current applied image processing method, and the new methodcan get more high modes details (neglected in the past).
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Key words:
- icf /
- indirect-drive /
- radiation drive symmetry /
- compressed core image /
- legendre fitting
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