光子

First, the background spectrum is subtracted from experimental one; Second, by the spectrum stripping, the counts came from partial energy deposition of incidence photon in HPGe crystal, such as Compton scatting or pair production; the next, transform the experimental spectrum to the incidence photon flux spectrum.

实验数据的处理过程有三步：1 从实验谱中减掉本底谱；2 实验谱中分离掉各种能量的入射光子在晶体中的部分能量沉积(康普顿散射、电子对效应)：3 处理过的实验谱转成入射光子通量谱。比较结果显示，在本实验中，模拟谱对实验谱的总计数相对偏差不大于20%，两者基本符合。

The tremendous application foreground of photonic crystals upsurges the research in fabricating periodic artificial structures in many famous labs all over the world during the last decade, which has been a very important research direction in the field of photonics.

光子晶体巨大的应用前景令世界很多著名实验室在近十年来掀起了光子晶体制作的研究热潮，已经成为光学领域一个非常重要的研究方向。

It has observed high-energy photons arriving up to 20 minutes behind zippier low-energy ones from a source 12 billion light years away.

这个望远镜已经观察到从120亿光年远处发射过来的高能量的光子比活力更强的低能量的光子迟到了20分钟。

Caustics with Max photons set to 0 and Indirect illumination off could crash while calculating the caustics photon map.

最大光子设置为0和直接照明关闭的计算聚光会崩溃当计算聚光的光子贴图时。

Several preliminary experimental results have been got successfully. Finally, to further demonstrate the technological dominances, a gear shaft system and log-pile photonic crystals with submicron fine structures are fabricated by single-step scanning.

最后，为了进一步展示双光子三维微细加工方法的技术优势，我们还通过一次扫描成型的方法制作完成了齿轮轴微系统和具有亚微米级精细结构的Log－pile型光子晶体，并利用相应的测试方法验证了这些器件所具有的功能。

The system Pancharatnam phase evolutes regularly when the average photon number of coherent light is small, while it becomes more chaotic as the average photon number increases.

系统Pancharatnam相位随时间的演化在平均光子数较小时表现比较有规律，但随着平均光子数的增加，它趋于混沌化。

Should the choice extinction coefficient small material, and the period number of photonic crystal can't be enough big.

设计光子晶体滤波器时，应选择消光系数尽可能小的材料，并且光子晶体的周期数不宜大。

Keywords: Photonic crystals; Photonic band gap; FDTD; colloidal microspheres; face-centered cubic.

中文关键词：光子晶体；光子带隙； FDTD法；微球粒度；面心立方。

The development of Photonic Crystal is introduced first, and then the author summarizes the status , applications and factures of the Photonic Crystal.

本文介绍了光子晶体的发展，总结了光子晶体的研究现状，应用领域和设计制作。

As a kind of energy,photons in combustion reaction directly affect flame temperature in terms of numbers and wavelength.

由于光子是一种形式的能量，因而燃烧反应发出的光子的数量和波长将直接影响到火焰的温度。

Shop assistant: Please check at the door.

店员：请您到门口柜台交费。

In the end, transportation of PAHs in the environmental matrix was preliminarily investigated and discussed according to PAHs data of soils and sediments from a certain region in Shanghai. The result indicated that there are two or more pathways on PAHs transportation in the environmental matrix.

最后，对上海特定地区内PAHs在环境介质中的迁移径途进行了分析讨论，结果表明上海市土壤和沉积物等环境介质中PAHs的迁移存在多种途径。