| X射线组合透镜近焦点处的三维聚焦性能研究 |
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| 引用本文： | 乐孜纯,张明,梁静秋,刘恺,董文,王亢.X射线组合透镜近焦点处的三维聚焦性能研究[J].光电工程,2006,33(3):82-87. |
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| 作者姓名： | 乐孜纯 张明 梁静秋 刘恺 董文 王亢 |
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| 作者单位： | 浙江工业大学,信息工程学院,浙江,杭州,310032;中国科学院长春光机物理所,应用光学国家重点实验室,吉林,长春,130031 |
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| 基金项目： | 中国科学院资助项目;浙江省自然科学基金 |
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| 摘 要： | X射线组合透镜是一种利用折射效应对X射线聚焦成像的新型元件。本文结合衍射理论和统计学理论,推导得出X射线组合透镜近焦点处的三维聚焦强度分布公式,并以此为基础对X射线组合透镜的结构参数进行设计。计算得出了PMMA、Si、Al三种材料的X射线组合透镜在不同工作波长下的强度增益、焦斑尺寸和焦深等聚焦性能指标。并针对PMMA材料X射线组合透镜,分析了近焦点处三维聚焦性能随组合透镜结构参数的变化关系,给出了一种PMMA材料X射线组合透镜的设计结果。根据设计的组合透镜结构参数,计算了当X射线工作波长为0.15nm时,X射线辐射经过组合透镜后的近焦点处的强度分布。
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| 关 键 词： | X射线组合透镜 三维聚焦 光强分布 X射线成像系统 |
| 文章编号： | 1003-501X(2006)03-0082-06 |
| 收稿时间： | 2005-07-09 |
| 修稿时间： | 2005-09-26 |
Study of the 3-D focusing performances near focus for the compound X-ray lens |
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| LE Zi-chun,ZHANG Ming,LIANG Jing-qiu,LIU Kai,DONG Wen,WANG Kang.Study of the 3-D focusing performances near focus for the compound X-ray lens[J].Opto-Electronic Engineering,2006,33(3):82-87. |
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| Authors: | LE Zi-chun ZHANG Ming LIANG Jing-qiu LIU Kai DONG Wen WANG Kang |
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| Affiliation: | 1. College of Information Engineering, Zhejiang University of Technology, Hangzhou 310032, China; 2. State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, the Chinese Academy of Sciences, Changchun 130031, China |
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| Abstract: | The X-ray compound lens is a novel refractive X-ray optical device. The authors report their recent theoretical and numerical study of such a device, including the derivations of the three-dimensional intensity distribution near focus based on the diffraction theory and the probability theory. As an example, the three-dimensional focusing performances such as intensity gain, the size of focus and the depth of focus are predicted for PMMA, Si and Al materials. The relationship between the three-dimensional focusing performances and the structural parameters of the PMMA compound X-ray lens is analyzed. And then a PMMA X-ray compound lens is designed. In addition, the numerical applications of the designed PMMA compound X-ray lens are also shown in the present paper for the working wavelength of 0.15nm. |
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| Keywords: | X-ray compound lens Three-dimensional focusing Light intensity distributions X-ray imaging systems |
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