| 激光核聚变中的一种X光解谱方法 |
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| 引用本文： | 刘成海,陆正强. 激光核聚变中的一种X光解谱方法[J]. 核聚变与等离子体物理, 1987, 0(2) |
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| 作者姓名： | 刘成海 陆正强 |
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| 作者单位： | 应用物理与计算数学研究所 北京(刘成海),应用物理与计算数学研究所 北京(陆正强) |
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| 摘 要： | 本文在SAND迭代法的基础上,采取带有周期性光滑化的限幅迭代方法,求解激光核聚变中的X光能谱取得了较好的结果。这个方法适用于根据亚千X射线谱仪、多道k边滤波谱仪和多道滤波-荧光谱仪的测量结果回推靶等离子体的X射线能谱。计算结果表明,该方法完全抑制了数值不稳定性,消除了非物理的“负能谱”现象和解谱结果中的数值结构。特别是该方法对初始试探谱有很强的适应性,解谱计算结果与初始试探谱无关。
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| 关 键 词： | 激光聚变 X射线能谱 |
A METHOD FOR SOLVING X-RAY SPECTRA IN LASER FUSION |
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| LIU Chenghai LU Zhengqiang. A METHOD FOR SOLVING X-RAY SPECTRA IN LASER FUSION[J]. Nuclear Fusion and Plasma Physics, 1987, 0(2) |
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| Authors: | LIU Chenghai LU Zhengqiang |
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| Affiliation: | Iustitute of Applied Physics and Computation al Mathematics. Beijing |
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| Abstract: | In this paper, an iterative method with amplitude-limiting and periodic smoothing technique has been developed on the basis of the SAND iteration. It has been used to solve the X-Ray spectra in laser fusion and satisfactory results obtained. The method is capable of solving the X-Ray spectra from the data of sub-key X-Ray spectrometer, multi-channel k-edge filtering spectrometer and multi-channel filtering fluorescence spectrometer. The computational results show that numerical instability is suppressed completely, and non-physical "negative spectra" and numerecal structure in the computed X-Ray spectra is eliminted by means of this method. The computational results are independent to the initial trial spectrum. |
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| Keywords: | Laser fusion X-ray spectra. |
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