| 椭球形单毛细管在材料微区分析中的优化 |
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| 引用本文： | 杨婧,王雪朋,赵伟林,李玉德,林晓燕.椭球形单毛细管在材料微区分析中的优化[J].北京师范大学学报(自然科学版),2017,53(2):151-154. |
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| 作者姓名： | 杨婧 王雪朋 赵伟林 李玉德 林晓燕 |
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| 作者单位： | 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,100875,北京;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,100875,北京;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,100875,北京;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,100875,北京;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,100875,北京 |
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| 基金项目： | 国家青年自然科学基金资助项目，中央高校基本科研业务费专项资金资助项目 |
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| 摘 要： | 介绍了旋转椭球单毛细管的传输特性,并围绕其在材料的微区分析领域中的应用进行优化设计.用模拟计算的方法,计算了点光源和面光源条件下椭球管传输性能随管长、截取位置变化的规律,并计算得到300μm 面光源条件下椭球管最佳光强增益条件:椭球管参数半长轴250mm,半短轴0.5mm,管长200mm,会聚光斑40μm,光阑尺寸100μm 时增益为175倍.经椭球管会聚后出射的X射线焦斑尺寸更小,功率密度增益更大,显著提高了分辨率,更有利于材料的微区分析.
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| 关 键 词： | 椭球管 光强增益 微区分析 |
Optimization of ellipsoidal capillary in micro-analysis |
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| YANG Jing,WANG Xuepeng,ZHAO Weilin,LI Yude,LIN Xiaoyan.Optimization of ellipsoidal capillary in micro-analysis[J].Journal of Beijing Normal University(Natural Science),2017,53(2):151-154. |
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| Authors: | YANG Jing WANG Xuepeng ZHAO Weilin LI Yude LIN Xiaoyan |
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| Institution: | College of Nuclear Science and Technology,Key Laboratory of Beam Technology and Material Modification of Ministry of Education,Beijing Normal University,100875,Beijing,China |
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| Abstract: | Transmission performance of ellipsoidal capillary is introduced.Performance of ellipsoidal capillary based on micro-analysis was studied.Changing laws of transmission performance with variation in tube length and interception position were simulated in conditions for point source and area source.Optimal conditions under 300 μm area source for intensity gain of capillary were obtained.The semi-major axis was 250 mm,semi-minor axis was 0.5 mm,and tube length was 200 mm,convergent spot size was 40 tm and intensity gain was 175 within 100 μm.Smaller convergent spot size and higher gain are obtained by using the ellipsoidal capillary,which can improve resolution successfully and adapt to material micro-fluorescence analysis. |
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| Keywords: | ellipsoidal capillary intensity gain micro-analysis |
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