Design and fabrication of one-dimensional focusing X-ray compound lens with Al material

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.     

A theoretical method based on Fourier spectrum analysis for the focusing performances of the X-ray compound refractive lenses

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.     

A method based on diffraction theory for predicting 3D focusing performance of compound refractive X-ray lenses

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.     

用全反射X荧光技术分析釉药粉末

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…     

抛物面型X射线组合折射透镜聚焦性能的理论与实验研究

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.     

酞菁与TiO2超微粒间的光诱导电子转移相互作用

带有负电荷取代基的四磺化酞菁化合物与 TiO2超微粒在溶液中通过静电相互吸引 ,能够形成基态复合物 .通过吸收光谱和荧光光谱 ,计算了磺化酞菁与 TiO2在溶液中的表观缔合平衡常数 K.与相应的烷氧基取代酞菁化合物作比较 ,并通过单光子计数技术测定染料荧光寿命 .结合荧光光谱 ,证明了磺化酞菁与 TiO2在溶液中的缔合作用 ,有利于激发态酞菁染料向半导体 TiO2的导带注入电子 ,从而发生分子间的电子转移反应 .将磺化酞菁吸附在 TiO2纳晶薄膜电极上 ,进行光电性能测试 .结果表明,染料敏化 TiO2纳晶薄膜电极光电响应的大小与染料在电极表面吸附的强弱有关 .     

2,9,16,23-四-[4-二甲氨基苯氧基]锌酞菁的合成和分子内光致电荷转移反应的研究

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。     

烷氧基取代金属酞菁固态薄膜光谱及结构的研究

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。     

低含量多元素物质的快速全反射X荧光分析

本文介绍了用全反射Ｘ荧光分析仪对样品量很少、元素含量很氏，多元素溶液的分析，测定了从含量最多的Ｎａ（２４３μｇ／ｍＬ）到含量最少的Ｃｕ（０．０６μｇ／ｍＬ）的１２种元素，同时也介绍了用累加法的多次快速测量以及逐差法处理数据以减少测量误差。     

Application of the probability theory in predicting 3D focusing behaviors of compound X-ray refractive lenses

X-rays promise a high resolving power due to the veryshort wavelength. Therefore, people have been trying todevelop X-ray optical devices for focusing X-ray beam toa small spot to perform X-ray analysis techniques. In1996, Snigirev et al.[1] proposed and demonstrated thatX-ray refractive focusing could be accomplished with acompound X-ray refractive lens (CRL). And then manypublications on the further researches appeared[2-8]. Thetheoretical results on the focusing performances in the fo-c…