软X光能谱仪求辐射能流的改进方法  

Improved method to calculate radiation flux from soft X-ray spectrometer

作　　者：宋天明[1] 杨家敏[1] 易荣清[1] 

机构地区：[1]中国工程物理研究院激光聚变研究中心,四川绵阳621900

出　　处：《强激光与粒子束》2010年第11期2617-2620,共4页High Power Laser and Particle Beams

摘　　要：使用多道软X光能谱仪测量黑腔辐射能流时间过程并使用最小二乘法将多道谱仪的响应函数线性组合为等效平响应。针对惯性约束聚变实验中软X光能谱强度分布不均匀、等效平响应局部不平带来的误差,提出了辐射能流求解的加权改进算法。对不同谱形和等效积分温度的能谱进行了计算,比较了不同方法得到的能流还原能力。改进后的方法应用于实验数据的处理,得到了修正后的等效积分温度随时间的演化过程。Multi-channel soft X-ray spectrometers are used to detect the time history of radiation flux in ICF experiments.The responses of the spectrometer channels are linearly combined to get a equivalent flat response in order to calculate the radiation flux without unfolding.To deal with errors caused by the shapes of the spectra and local oscillations of the equivalent flat response,a method with weighting has been introduced.Flux recovery ratios of different methods for different spectrum shapes were compared.The improved method has been used to analyze ICF experiment data,and a modified time history of equivalent temperature was obtained.

关 键 词：软X光能谱仪 惯性约束聚变 解谱 辐射能流 

分 类 号：TL651[核科学技术—核技术及应用] O434[机械工程—光学工程]