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And then the partially polarized and coherent Gausian-Schell beam is taken as a numerical example to study the influence of the polarized grating TE and TM complex transmission and some parameters of the incident PGSM on the polarization degree of the diffraction field and the diffractive orders's angular correlation in details.

以部分偏振的高斯-谢尔模型光束为例,数值分析了偏振光栅TE和TM波的复振幅透过率、入射光束的光学参量对衍射场偏振度和场中各衍射级次的角相关的影响。

The angular correlation between the emitted electrons, which equally shared the excess energy, was analyzed in the plane defined by the projectile and the first detected electron.

着重分析了在入射电子束与出射电子构成的平面内,3个均分系统剩余能量的电子出射角关联关系,并与理论计算进行了比较。

The diffraction intensity change with to step number L , incidence wavelength λ,diffraction angle θ and outline angle φ 0 is analyzed.

分析计算了衍射光强随台阶数、入射波长、衍射角和轮廓角的变化关系。

According to the relation spectrum resolution is inverse proportional to focal distance given a certain incident wavelength and phase number,and the theoretic formula is consistent with reported experimental result.

光谱分辨率是评价衍射微透镜分光特性的主要指标,根据标量衍射理论,给出了多台阶位相型菲涅尔透镜的设计公式,并利用球面波的传输理论推导了微透镜主焦距与光谱分辨率之间的函数关系,得出在入射波长和位相台阶数一定的情况下,光谱分辨率与中心焦距之间呈反比;理论推导的结果与已发表的实验结果一致。

The hard-edge aperture is "moved out" in an complicated optical system, which means to transfer the system with such hard-edge aperture into an optical system with entrance and exit pupils, and the hardedge aperture is taken as an exit pupil so as to find the analytical solution of a light beam.

把硬边光阑从复杂光学系统中"移"出来,即把任意一个含有硬边光阑的复杂光学系统体现到含有入射光瞳和出射光瞳的光学系统中,使硬边光阑的作用转化为出射光瞳的作用,以便求出观察面上的解析解。

The formula group for the design of multi-phase micro Fresnel lens according to scalar diffraction theory was given and the transmission theory of spherical wave were used to deduce the relation of focal distance of the micro lens with spectrum resolution. According to the relation spectrum resolution is inverse proportional to focal distance given a certain incident wavelength and phase number, and the theoretic formula is consistent with reported experimental result.

光谱分辨率是评价衍射微透镜分光特性的主要指标,根据标量衍射理论,给出了多台阶位相型菲涅尔透镜的设计公式,并利用球面波的传输理论推导了微透镜主焦距与光谱分辨率之间的函数关系,得出在入射波长和位相台阶数一定的情况下,光谱分辨率与中心焦距之间呈反比;理论推导的结果与已发表的实验结果一致。

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。

When the reference beam is incident on the phase grating, the system will diffract out the reference beam and reconstruct the central data part.

最后在读取资料光之光路上加入绕射光学元件,使资料光入射绕射光学元件后产生绕射偏折,利用影像侦测器撷取重建之资料讯号。

The dose enhancement effects and decreasing effects caused by material inhomogeneity were studied quantitatively with a parameter named Dose Perturbation Factor, which was the ratio of the dose at a point in the heterogeneous phantom to the dose of the same spatial location point in the homogeneous phantom. It was showed that the degrees of the dose enhancement or decreasing depended on the energy of radiation, field sizes of the beamlets and compositions of the media. The dose perturbation for high energy X rays is greater than that for low energy X rays. At the same energy condition, the dose perturbation decreased when the field size increased. And the relationship between them was not linear.

模拟结果表明:在小射野情况下,异质组织界面处出现了较大的剂量跃变,剂量扰动效应的强弱程度取决于射线的能量、射野的大小和模体介质的不同等多种因素,高能X射线条件下的剂量扰动效应大于低能X射线条件下的剂量扰动;在入射X射线能量相同的条件下,剂量扰动效应随射野尺寸的减小而增强,并呈现一种非线性关系。

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The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

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