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毛细管X光透镜聚焦的微束能量色散X射线衍射分析的研究

Micro Energy Dispersive X-Ray Diffraction Analysis by Polycapillary X-Ray Optics Focusing

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摘要

微束能量色散X射线衍射(EDXRD)分析在测量小样品或样品微区的物相结构方面具有重要的应用前景。提出了一种采用自行研发的微束X射线荧光谱仪进行微束能量色散X射线衍射分析的研究方法。用便携式毛细管X光透镜聚焦的微束X射线荧光谱仪(焦斑直径为190.7 μm)对人民币5角硬币“角”部分长×宽为4 mm×4 mm的微区进行微束能量色散的X射线衍射扫描测量,并进行数据处理,得到该区域内Cu3Sn(0 8 3)和CuO(2 0 2)等晶相的分布;同时,用台式毛细管X光透镜聚焦的微束X射线荧光谱仪(焦斑直径为31 μm)对一颗直径约为1 mm的矿石颗粒进行微束能量色散的X射线衍射二维扫描分析,得到扫描区域内SiO2(3 2 9)和Fe2O3(1 1 6)等晶相的分布。结果表明,毛细管X光透镜聚焦的微束X射线荧光谱仪在开展小样品或样品微区的能量色散X射线衍射分析方面具有一定的应用前景。

Abstract

Micro energy dispersive X-ray diffraction (EDXRD) analysis has importance application prospects in measuring the phase structure of small samples or sample micro-area. A novel method of micro EDXRD analysis using a self-development micro X-ray fluorescence spectrometer is proposed. The two-dimensional scan of a 4 mm×4 mm mico-area on the surface of a RMB-5-Jiao coin is made by a portable micro-beam X-ray fluorescence spectrometer based on polycapillary X-ray optics focusing (focal spot diameter is 190.7 μm). After the obtained data are processed, the mappings of Cu3Sn(0 8 3), CuO(2 0 2) and other crystal phases are presented. Simultaneously, the two-dimensional scan of an ore particle with diameter of about 1 mm is also made by a desktop micro-beam X-ray fluorescence spectrometer based on polycapillary X-ray optics focusing (focal spot diameter is 31 μm). The mappings of SiO2(3 2 9), Fe2O3(1 1 6) and other crystal phases are also presented. The results show that the micro-beam X-ray fluorescence spectrometer based on polycapillary X-ray optics focusing has a potential application in the micro energy dispersion X-ray diffraction analysis of small samples or micro-areas of samples.

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中图分类号:O657.34

DOI:10.3788/aos201838.1230002

所属栏目:光谱学

基金项目:国家自然科学基金(11175022,11575026)、北京市自然科学基金(1162006)

收稿日期:2018-06-28

修改稿日期:2018-07-30

网络出版日期:2018-08-13

作者单位    点击查看

段泽明:北京师范大学核科学与技术学院射线束技术与材料改性教育部重点实验室, 北京 100875北京市辐射中心, 北京 100875
姜其立:北京师范大学核科学与技术学院射线束技术与材料改性教育部重点实验室, 北京 100875北京市辐射中心, 北京 100875
刘俊:北京师范大学核科学与技术学院射线束技术与材料改性教育部重点实验室, 北京 100875北京市辐射中心, 北京 100875
潘秋丽:北京师范大学核科学与技术学院射线束技术与材料改性教育部重点实验室, 北京 100875北京市辐射中心, 北京 100875
程琳:北京师范大学核科学与技术学院射线束技术与材料改性教育部重点实验室, 北京 100875北京市辐射中心, 北京 100875

联系人作者:程琳(chenglin@bnu.edu.cn)

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引用该论文

Duan Zeming,Jiang Qili,Liu Jun,Pan Qiuli,Cheng Lin. Micro Energy Dispersive X-Ray Diffraction Analysis by Polycapillary X-Ray Optics Focusing[J]. Acta Optica Sinica, 2018, 38(12): 1230002

段泽明,姜其立,刘俊,潘秋丽,程琳. 毛细管X光透镜聚焦的微束能量色散X射线衍射分析的研究[J]. 光学学报, 2018, 38(12): 1230002

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