【摘 要】
：
通过模拟单色X 射线源下硅材料光栅泰伯自成像，研究振幅为均匀和高斯分布、光源尺寸与横向相干长度比值不同的单色扩展光源与金材料源光栅相结合的成像系统中光栅泰伯效应自成像条纹可见度的影响因素。计算结果表明，基于光栅的X 射线相衬成像系统中光栅泰伯自成像条纹可见度主要受成像距离和光源横向相干长度影响，受单色扩展光源的振幅分布和尺寸影响很小。
【机 构】
：
中国工程物理研究院流体物理研究所脉冲功率科学与技术重点实验室,四川绵阳621900
论文部分内容阅读
通过模拟单色X 射线源下硅材料光栅泰伯自成像，研究振幅为均匀和高斯分布、光源尺寸与横向相干长度比值不同的单色扩展光源与金材料源光栅相结合的成像系统中光栅泰伯效应自成像条纹可见度的影响因素。计算结果表明，基于光栅的X 射线相衬成像系统中光栅泰伯自成像条纹可见度主要受成像距离和光源横向相干长度影响，受单色扩展光源的振幅分布和尺寸影响很小。
其他文献
The use of low-coherence light is expected to be one of the effective ways to suppress or even eliminate the laser–plasma instabilities that arise in attempts to achieve inertial confinement fusion. In this paper, a review of low-coherence high-power lase
Optical burst switching (OBS) is a promising optical switching technology. The burst assembly algorithm controls burst assembly, which significantly impacts performance of OBS network. This paper provides a new assembly algorithm, united assembly algorith
为了提高图像纹理检测的效果,采用多阶环形结构量子算法。建立了量子多阶环形结构,每个量子不仅可以与自身环沟通,还可以与不同阶的环沟通,每个量子可以选择自身左右相连的两个量子作为邻居,也可以在相邻环上随机选择其他量子作为邻居,其选择相邻环或者跨环上的数量随机决定,环的优劣决定了环在多阶环中的位置,自适应选择每阶量子个体参与优化的概率。确定了量子节点信息被共享概率,包括全阶共享概率和同阶共享概率;通过幅
Diamonds may not be forever, but research interest in diamond has never ebbed. Owing to its highly symmetric crystal structure and strong covalent C–C bonds, diamond possesses an exceptional combination of physical properties. Its hardness and thermal con
We propose and experimentally demonstrate a novel scheme to realize electrical/optical (E/O) conversion on the receiver side of a wireless fiber integration system at the W band. At the receiver, a directly modulated laser (DML) is used to realize E/O con
极紫外光刻掩模具有特殊的多层膜堆叠的反射式结构, 在工艺制造过程中极易产生缺陷, 引起多层膜结构变形, 从而对掩模反射场产生干扰。这种掩模缺陷是制约极紫外光刻技术发展的难题之一。建立了含有缺陷的极紫外掩模多层膜结构模型, 在此基础上采用时域有限差分(FDTD)法分析了缺陷尺寸和缺陷位置对掩模多层膜结构反射场分布的影响。结果表明, 多层膜结构反射场受干扰程度是缺陷的高度和宽度综合作用的结果, 并且与缺陷结构的平缓程度有关。反射场受干扰程度也与缺陷在多层膜结构内部的高度位置有关, 引起多层膜结构靠近底层变形的
Utilizing the intersecting cortical model (ICM) to enhance degraded images under poor illumination is presented. As the key point, the general mapping function (MF) for image enhancement is deduced firstly on the basis of the nature-firing ICM (NF-ICM), w
We present a method of time coding with ABAB synchronization timing control for real-time 3D super-resolution range-gated imaging (3DSRGI). To meet the high precision of time delay and pulse width in ABAB synchronization time sequencing, phase shift is im
美国Optical Storage Solution公司已在太平洋气体与电气公司的Diablo Canyon核发电厂装了一台2000兆字节的小型光盘只读存贮系统。这台系统由12英寸光盘及平面计算机控制的驱动装置组成，主要用于长期记录该发电厂工作人员及参观者佩戴辐射卡剂量等参数。
In order to fabricate a large-aperture continuous phase plate (CPP) using atmospheric pressure plasma processing (APPP) with high efficiency and precision, the position dwell mode and velocity mode were proposed and the iterative calculation method was de