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A method based on diffraction theory for predicting 3D focusing performance of compound refractive X-ray lenses 总被引:3,自引:0,他引:3
A method based on the diffraction theory for estimating the three-dimensional (3D) focusing performance of the compound refractive X-ray lenses is presented in this paper. As a special application, the 3D X-ray intensity distribution near the focus is derived for a plano-concave compound refractive X-ray lens. Moreover, the computer codes are developed and some results of 3D focusing performance for a compound refractive X-ray lens with Si material are shown and discussed. 相似文献
2.
A theoretical method based on Fourier spectrum analysis for the focusing performances of the X-ray compound refractive lenses 总被引:1,自引:0,他引:1
It is important to predict the intensity distribution in focusing plane for designing the X-ray compound refractive lenses. On the basis of analyzing the structure of X-ray compound lenses and comparing it with Praunhofer diffraction system, it is concluded that the X-ray focusing system can be regarded as a kind of Praunhofer diffraction system. Therefore, a method based on Fourier spectrum analysis is presented to predict the intensity distribution in the focusing plane for the X-ray lenses. A brief analysis on the relationship between the parameters of X-ray lenses and their focusing performance is also given in this paper. 相似文献
3.
用全反射X荧光技术分析釉药粉末 总被引:2,自引:0,他引:2
1引言在微量痕量元素分析方面,全反射X荧光(TXRF)分析技术被认为是八十年代发展起来的最有竞争能力的分析手段,在原子谱仪中处于领先地位。我们从八十年代开始从事TXRF的研究,并于1993年自制出一台双激发源双光路全反射X荧光分析装置。几年来我们在许多领域里开展了应用研究。对水、油、头发、动物、古铜器、矿石粉、高纯材料、人工晶体等进行了分析实验。釉药是生产陶瓷的重要原料,需要好的配方并进行质量控制。但是,釉药粉末是多种原料的混合物,含有Sb、Zr、Ti、As等多种元素,难以消解,不易配成均匀的溶… 相似文献
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为满足资源受限环境下的安全加解密芯片的设计要求,提出了一种轻量级AES加解密实现方法.该方法采用8位串行数据通路,模块复合结构,并对加解密过程中的状态矩阵、列混合模块和密钥扩展模块的设计优化,用最少的硬件资源实现加解密功能,有效地提高硬件利用率.仿真及实验证明,该设计具有芯片面积小、功耗低的优点,可以满足无线移动网络以及其他资源受限环境. 相似文献
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对国际上主流的WSON测试平台ADRENALINE的最新进展作综述,对国内主流设备厂商的WSON网络设备进行简介,结合数据中心和软件定义光网络两项新型应用,对WSON网络技术的实用化和标准化进行展望。 相似文献
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A method based on Fourier spectrum analysis for predicting the performances of the X-ray compound lenses is briefly introduced, the theoretical result obtained is the same as that of Fresnel-Kirchhoff approach. A kind of technique named moulding is developed for fabricating the one-dimensional (1D) compound X-ray lens with Al material and the fabrication process is presented. In addition, a two-time coating method is used to improve the numerical apertures of the compound lenses. Furthermore, the focusing performance of the Al compound X-ray lens under the high energy X-rays is measured. 相似文献
7.
结合衍射理论和矩阵光学方法得出抛物面型X射线组合折射透镜的光学性能指标(包括其焦距的严格表达式、薄透镜近似的判定准则、透过率和有效孔径,以及极限聚焦光斑尺寸等).采用X射线深度光刻技术实际制作了PMMA材料抛物面型X射线组合折射透镜并给出了工艺测试结果.最后在北京同步辐射装置(BSRF)上,实际构建了基于3种不同结构参数的PMMA材料抛物面型X射线组合折射透镜的微束聚焦实验系统.并实际测试了其聚焦性能,均获得了良好的聚焦效果,给出实测结果并对实测结果进行了分析和讨论. 相似文献
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光敏电荷转移是近年来十分活跃的研究领域,人们设计了各种电子给体和电子受体用共价键相连结的化合物,如:卟啉电子给体,醌[1]、硝基苯、甲基紫精作为电子受体,模拟自然界的光合作用。 相似文献
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本文选用一种烷氧基取代的金属酞菁化合物,溶解旋涂于玻璃基板上,分别经有机溶剂处理和加热处理,发现都可以使吸收光谱范围向长波方向拓宽。X-射线衍射研究表明:经上述方法处理后都可使染料分子的聚集程度发生变化,堆砌方式由微晶型向晶型结构转变,高分辩率扫描电镜观察进一步证实了上述结果。 相似文献
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