| 基于X射线相干衍射成像的元素分布成像 |
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| 引用本文： | 祝江威,许子健,刘海岗,张祥志,郭智,王勇,邰仁忠.基于X射线相干衍射成像的元素分布成像[J].核技术,2012(4):245-250. |
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| 作者姓名： | 祝江威 许子健 刘海岗 张祥志 郭智 王勇 邰仁忠 |
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| 作者单位： | 中国科学院上海应用物理研究所;中国科学院研究生院 |
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| 摘 要： | 基于上海光源软X射线谱学显微线站的特点和相干X射线衍射成像(CDI)技术,对软X射线相干衍射成像方法的一个重要应用:元素分布成像及含量分析进行了模拟研究。推导了CDI相比双能分析算法并进行了理论模拟,估算了能够分辨的最小物质含量,并分析了CDI实验噪声等因素对元素分布成像的影响。所得结果可对软X射线CDI的实际应用提供理论指导。
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| 关 键 词： | X射线光学 相干衍射成像 相比双能分析 元素分辨 |
Three-dimension elemental mapping based on coherent X-ray diffraction imaging |
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| ZHU Jiangwei,XU Zijian,LIU Haigang,ZHANG Xiangzhi,GUO Zhi,WANG Yong,TAI Renzhong.Three-dimension elemental mapping based on coherent X-ray diffraction imaging[J].Nuclear Techniques,2012(4):245-250. |
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| Authors: | ZHU Jiangwei XU Zijian LIU Haigang ZHANG Xiangzhi GUO Zhi WANG Yong TAI Renzhong |
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| Affiliation: | 1(Shanghai Institute of Applied Physics,Chinese Academy of Science,Shanghai 201800,China) 2(Graduate School of Chinese Academy of Science,Beijing 100049,China) |
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| Abstract: | Based on the characteristics of soft X-ray spectro-microscopy at Shanghai Synchrotron Radiation Facility (SSRF),we explore in this paper the possibility of performing soft X-ray CDI(coherent X-ray diffraction imaging) for 3D elemental mapping.The dual-energy contrast analysis algorithm of CDI is deduced.The experiment method is simulated with Fe as the element under analysis in an organic sample(with C as the major element beyond analysis). The analysis sensitivity is estimated,and noise effect on the elemental mapping is analyzed.The results are of help in developing the soft X-ray CDI application. |
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| Keywords: | X-ray optics Coherent diffraction imaging Compared dual-energy analysis 3D elemental mapping |
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