查询词典 diffraction angle

A Study on Fraunhofer Double-Slit Diffraction by Applying Simulation Technology;2. Based on Kirchhoffs theory,the approximate intensity formulas of double-slit diffraction of Gaussian Beam is derived under paraxial approximation with power series expansion methods.

依据基尔霍夫衍射理论，利用幂级数展开的方法推导出旁轴条件下高斯光束双缝衍射的近似光强计算公式，并通过数值计算对双缝衍射的基本特性进行了讨论，得出了与其他文献一致的结论，得出了高斯光束下的双缝衍射极小值点比平行光束双缝衍射的极小值点向外移，观察屏中心光能变小；光强分布可由激光斑在衍射屏处的参数调制的结论。

A reflection type diffraction grating according to the present invention has a structure in which a metal film as a first layer with reflectance not lower than 30 % with respect to the wavelength of incident light and a transparent dielectric film as a second layer are laminated successively on the surface of the reflection type diffraction grating.

本发明的反射型衍射光栅的结构以金属膜为第一层，相对于入射光波长，具有不低于30％的反射率，以透明绝缘膜为第二层，所述第一和第二层依次被层叠在所述反射型衍射光栅的基底表面上。

Under the oblique incidence cases, the optical path difference of light beam distributed on the edge of steps can be calculated by using the geometric method. Then, according to the multi-slit Fraunhofer diffraction, the expression of diffraction intensity of reflection step grating is deduced.

针对反射性阶梯光栅，利用几何方法计算出斜入射情况下光束在台阶边缘的光程差的分布情况，根据多缝夫琅和费衍射推导出反射型阶梯光栅的衍射光强表达式。

It was observed that there are two types of shock interaction from the edge of the reflector which are known as the diffraction shocks. For weaker shock diffraction, both shocks are crossing each other which is corresponding to the regular reflection.

在绕射震波的型态观察方面则有交叉和不交叉的两种结果：当绕射震波强度较强时，绕射震波不交叉，为马赫反射的结果；绕射震波强度较弱时，则绕射震波相交叉，为正规反射的结果。

Computer optical element based on light-wave diffraction theory is through that etches on film base to produce relievo structure with two or multiple sidestep depths , and form pure phase and coaxial recurrence , so it has higher diffraction efficiency .

计算机光学元件基于光波衍射理论，通过在片基上刻蚀产生两个或多个台阶深度的浮雕结构，形成纯相位并同轴再现，使其具有极高的衍射效率。

Epitaxial growth of GaN on sapphire and novel substrate LiAlO〓 1 The growth mechanism of GaN on sapphire substrate was investigated using AFM, X-ray diffraction, X-ray double crystal diffraction, Rutherford back scattering etc.

阐明了衬底表面的氮化处理、缓冲层的生长对外延膜结晶形貌、结晶质量、以及外延匹配关系的影响规律。

Probe into theory of X-ray diffraction testing residual stress in glass-ceramic and effect on accuracy of stress with the X-ray diffraction.

探讨了X射线法测量微晶玻璃残余应力的原理及该方法对残余应力值精确度的影响。

The principle of the method is as follows: The method employs a transmission grating plate placed over a sample surface at a small distance h. According to diffraction theorym an incident light wave is divided into both reflected and transmitted diffraction waves at the grating plate.

该方法的原理如下：该方法采用了透射光栅放置在一个小的距离超过每小时板样品表面据衍射theorym事件光波分为既反映和传播的格板衍射波分歧。

For a given total exposure dose, the diffraction efficiency of the diffraction grating first increases and then decreases with increasing the exposure intensity, and this effect becomes more remarkable with increasing the unsaturation concentration of polymeric binders.

高分子感光膜的衍射效率随着高分子载体折光率的增大而提高，同时其饱和曝光剂量随着感光膜体系中丙烯酸双键含量的增大而降低；单体良好的迁移性能及其与高分子载体良好的相容性都将大大提高感光膜的衍射效率。

In this research, we choose core material of paragliding cord barding, and this shows typical diffraction patterns for the PBO fiber and Kevlar fiber by synchrotron diffraction patterns.

本研究以PBO纤维为主要材料，同时经由20、40、60和80小时的碳弧光连续照射对PBO纤维的断裂拉伸强力影响做探討。

Continuously improve the production mechanism, to provide customers with better quality products and services.

不断的完善生产机制，给客户提供更优质的产品及服务。

B:Yes, he was the very prize-winner in the court tennis ten years ago?

是的，他是十年前的世界网球冠军。