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对数螺旋型劳厄弯晶的X射线单色成像应用

Logarithmic Spiral Bent Laue Crystals for X-Ray Monochromatic Imaging Applications

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摘要

利用劳厄晶体研究了X射线的单色衍射性质,研究了对数螺旋型劳厄弯晶在等离子体X射线单色成像中的应用。根据光线追迹原理及对数螺旋线的表面方程,研究了对数螺旋型劳厄弯晶的单色成像原理,分析了单色衍射像不受透射白光X射线影响的准则,以及子午、弧矢放大倍数和单色成像视场等性能参数。研制了石英晶体(1010)对数螺旋劳厄弯晶分析器,以铜靶X射线源作为背光源,对网丝直径为50 μm的金属网格进行了单色背光成像实验。实验结果表明,当背光源尺寸为110 μm时,对数螺旋型劳厄弯晶的空间分辨力约为11.9 μm,分析器在子午和弧矢方向的视场分别达到22.3557 mm和8.2602 mm。

Abstract

Taking advantages of the monochromatic X-ray diffraction property of Laue crystals, an innovative use of logarithmic spiral bent Laue crystals for X-ray monochromatic imaging is investigated. According to the ray tracing method and the surface equation of the logarithmic spiral, the imaging principles and characteristics of the logarithmic spiral bent Laue crystals are studied, including the condition that the diffracted beam can be separated from the transmitted beam, the magnifications and the field of view (FOV). A logarithmic spiral bent quartz (1010) Laue crystal analyzer is developed. With the proposed crystal analyzer, the monochromatic backlight imaging experiment for the mesh grid with a diameter of 50 μm is carried out by taking an X-ray source of Cu target as the backlighter. The experimental results show that the spatial resolution of the analyzer is approximately 11.9 μm under a source diameter of 110 μm. Furthermore, the FOVs of the crystal analyzer are 22.3557 mm and 8.2602 mm in horizontal and vertical directions, respectively.

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中图分类号:O434.13;TL65

DOI:10.3788/cjl201340.0615001

所属栏目:光谱学

责任编辑:李文喆  信息反馈

基金项目:国家自然科学基金(NSAF10976033)资助课题。

收稿日期:2013-02-28

修改稿日期:2013-04-06

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作者单位    点击查看

毋玉芬:重庆大学光电技术及系统教育部重点实验室, 重庆 400030
肖沙里:重庆大学光电技术及系统教育部重点实验室, 重庆 400030
鲁建:重庆大学光电技术及系统教育部重点实验室, 重庆 400030
钱家渝:重庆大学光电技术及系统教育部重点实验室, 重庆 400030
刘利锋:重庆大学光电技术及系统教育部重点实验室, 重庆 400030
黄显宾:中国工程物理研究院流体物理研究中心, 四川 绵阳 621900

联系人作者:毋玉芬(youyuanff@sina.com)

备注:毋玉芬(1982-),女,博士研究生,主要从事X射线光学及弯晶成像谱学方面的研究。

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引用该论文

Wu Yufen,Xiao Shali,Lu Jian,Qian Jiayu,Liu Lifeng,Huang Xianbin. Logarithmic Spiral Bent Laue Crystals for X-Ray Monochromatic Imaging Applications[J]. Chinese Journal of Lasers, 2013, 40(6): 0615001

毋玉芬,肖沙里,鲁建,钱家渝,刘利锋,黄显宾. 对数螺旋型劳厄弯晶的X射线单色成像应用[J]. 中国激光, 2013, 40(6): 0615001

被引情况

【1】刘利锋,肖沙里,钱家渝,韦敏习,陈伯伦. 箍缩等离子体X射线能谱诊断. 光学学报, 2015, 35(s1): 130004--1

【2】柯杰,张军勇. 斐波那契光子筛的聚焦成像特性. 光学学报, 2015, 35(9): 923001--1

【3】柯杰,张军勇. 斐波那契光子筛的聚焦成像特性. 高功率激光及等离子体物理研究论文集(专题), 2015, 13(1): 923001--1

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