计算物理 ›› 2001, Vol. 18 ›› Issue (3): 276-280.
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江少恩, 郑志坚, 孙可煦
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JIANG Shao-en, ZHENG Zhi-jian, SUN Ke-xun
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摘要: 提出软X光能谱仪的一种新的解谱方法即最大熵法,运用新的平滑方法即样条拟合方法处理滤片的边带结构,并对最大熵法的收敛性和稳定性进行了分析.结果表明,该方法的谱回推精度高,收敛速度快且对噪声不很敏感.该方法适用于根据软X光能谱仪的测量结果回推靶等离子体的软X光谱.
关键词: 软X光谱仪, 最大熵法, 样条拟合平滑
Abstract: A new method unfolding soft X-ray spectra for a soft X-ray spectrometer (SXS),which is based on maximum entropy principle (ME),is put forward.The spline fit method is used to smooth the discontinuities between the channels at the filters edge responses.The convergent speed of ME is rapid,the stability and the deconvolution accuracy appear to be good.ME's unfolding error can achieve 5%.The method is capable of unfolding the soft X-ray spetra for the soft X-ray spectrometer.
Key words: soft X-ray spectrometer (SXS), maximum entropy, spline fit smoothing
中图分类号:
O434
江少恩, 郑志坚, 孙可煦. 软X光能谱仪的一种新的解谱方法[J]. 计算物理, 2001, 18(3): 276-280.
JIANG Shao-en, ZHENG Zhi-jian, SUN Ke-xun. A NEW METHOD UNFOLDING SPECTRA FOR THE SOFT X-RAY SPECTROMETER[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 2001, 18(3): 276-280.
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http://www.cjcp.org.cn/CN/Y2001/V18/I3/276