查询词典 spectrometer

Ion gate is one of the important parts in an ion mobility spectrometer.The main function of the ion gate is to control the ions to fly into the drift tube in pulse mode.

离子门是离子迁移谱仪的一个重要部件，主要作用是用来控制离子以脉冲的方式有效地进入迁移管。

In this text, we present the Ion Mobility Spectrometer developed by the Third Research Institute of the Ministry of Public Security. Its radical structure is described, especially the core component, which is called drift tube, is depicted in detail. Also, some questions and corresponding solutions encountered in the research of theinstrument are pointed out, which gives much valuable information to the laterresearchers.

本文主要介绍了公安部第三研究所自行研制的离子迁移谱仪，描述了它的基本结构，并详细介绍了其核心部件迁移管的构造，指出了我们在仪器研制中碰到的诸多问题以及相应的解决方法，为以后的仪器研制提供了有价值的参考资料。

The annealing behavior of double-space in the neutron irradiation Czochralski silicon is studied by Fourier transform infrared spectrometer technique and positron annihilation spectroscopy.

利用傅立叶红外吸收光谱和正电子湮没技术对快中子辐照直拉硅中的双空位(V2)的退火行为进行了研究。

In chapter 2 and 3, experimentally, using the Angular-Resolved high-resolution fast Electron Energy Loss Spectrometer , at the condition of 2. 5 keV incident energy and 50-60 meV energy resolution, we measured the Optical Oscillator Strength Density Spectra for the excitations of 4p, 4s or 3d electron. The oscillator strengths for excitations of the valent shell 4p electron were obtained, and comparisons were done between presently experimental and previously experimental and theoretical results. The experimental results of different groups agree with each other approximately, but the semi-experientially theoretical results do not match with the experimental results. The delayed maximum in the photoabsorption spectra was discussed. It should arise from the transition of 4p→∈d. For the excitation of the inner-valent 4s electron, the discrepancies for the resonant structures in previous electron-impact results and photoionization results were clarified in present work, which confirms again that the fast electron impact method is suitable to measure the optical oscillator strengths. The autoionization Rydberg series 4s〓ns (n=5, 6, 7) and 4s〓nd (n=4, 5, 6, 7) were identified without ambiguity by the measurement at 0°, 2° and 4°scattering angles. The energy levels and natural widths of the excitations of Kr3d and Ar2p inner shell, including optically allowed and forbidden transitions, were determined. The widths of these inner shell excitations are nearly the same, which was interpreted by the Resonant Auger effect .

在第二章和第三章，实验上，使用角分辨的高能量分辨快电子能量损失谱仪，在2.5keV电子入射能量和50-60meV能量分辨下，测量了Kr原子由价壳层4p到内价壳层4s，再到内壳层3d电子激发的光学振子强度密度谱；得到了价壳层4p电子激发束缚态的光学振子强度，与前人实验和半经验理论结果作了细致的比较，说明几家实验是比较符合的，但半经验的理论计算存在问题；分析了光吸收谱中的延迟极大现象，说明在第一电离阈值以上几个eV范围内的极大值源于4p→εd跃迁产生的延迟极大；对于内价壳层4s激发的自电离区，澄清了前人实验中电子碰撞方法和光学方法在共振结构上存在差异的问题，再一次肯定了快电子碰撞方法是获得绝对光学振子强度的一种好方法；通过在非0°散射角的测量（如2°和4°），清楚地标识了4s电子激发的光学禁戒跃迁自电离里德堡系列4s〓ns（n=5，6，7）和4s〓nd（n=4，5，6，7）；通过在0°和4°散射角的测量，观测并标识了几个新的内壳层光学禁戒跃迁能级，得到了Kr原子3d和Ar原子2p内壳层激发态（包括光学允许和禁戒跃迁形成的）的能级位置和自然宽度，用共振俄歇效应解释了这些内壳层激发态（不管是光学允许还是禁戒跃迁产生的）的自然宽度彼此比较接近的原因。

Gravity wave and ozone are two interesting topics in the middle and upper atmosphere. In this dissertation, they are studied by numerical simulation and instrument development respectively.In section one, by using FICE scheme and TIME-GCM, a model of trace gases and OH airglow affected by gravity wave is set up, then the propagation of nonlinear gravity wave and the effect on trace gases and OH airglow are analyzed. The result shows gravity wave excited by tropospause forcing can propagate stably to the mesosphere through the stratosphere so that energy and momentum can be transferred from one region to another. In this process, gravity wave undergoes growth, overturning, convection and breaking. And the no-isothermal structure can accelerate the breaking of gravity wave in mesospause, and the breaking of gravity wave is an important source of convection and small-scale waves.

中文题名气辉的非线性重力波研究及臭氧总量探测仪的研制副题名外文题名 The study of airglow by nonlinear gravity wave and the development of the total ozone spectrometer 论文作者王咏梅导师刘振兴王英鉴学科专业空间物理学研究领域\研究方向学位级别博士学位授予单位中国科学院空间科学与应用研究中心学位授予日期2003 论文页码总数88页关键词臭氧气辉重力波馆藏号BSLW /2003 /P421 /7 重力波和臭氧是中高层大气中研究的两大热门课题，本文分别从理论模式和仪器研制两方面对它们进行了研究。

To avoid the shortcoming of magnification change with wavelength, which will cause the spectral image pixel registration error and provide inaccurate relative spectral signal strength in the classical diffractive optic imaging spectrometer, a novel hybrid refraction/diffraction telecentric optical system combining a diffractive lens with an achromatic lens system is presented, and the working principle is then established.

为了克服在传统衍射光学成像光谱仪中，衍射透镜的焦距随波长变化引起系统放大率随波长变化，从而导致光谱图像的像元配准误差，得到并不精确的相对光谱信号强度，提出了将衍射透镜与消色差透镜系统相结合的新型折/衍混合、二组元复合远心成像光学系统的技术方案，具体分析推导了该系统的成像理论。

Spectrophotometric in-line monitoring of sulde sul- fur and polysulde excess sulfur (S0 ), was done using a Zeiss MSC 320 spectrometer equipped with an attenuated total reectance probe for u.v. measurements.

光度法在线监测sulde硫酸毛皮时和polysulde超过硫（ S0 ），做使用蔡司海安320配备了光谱仪减毒总reectance紫外探测器测量。

The Hamamatsu R5924 photomultiplier tube of mesh type will be used for the time-of-flight counter of the Beijing Electron-Positron Spectrometer III.

北京谱仪III中的飞行时间探测器将采用滨松公司生产的细网型光电倍增管R5924。

Researchers from the Max Born Institute – Berlin, the Carl von Ossietzky University of Oldenburg and the Polytechnic University of Milan have developed an absorption spectrometer that can pinpoint variations in the local composition of polymeric or other optoelectronic materials with a spatial resolution of 100 nm.

由Bax Born研究所、欧登堡大学(Ossietzky Unifersity of Oldenburg)及米兰科技大学组成的研究小组发展出一种吸收光谱仪，可以观察高分子或其他光电材料的局部组成变化，其空间解析度高达100 nm。最令人振奋的是，该装置的操作速度相当快。

The gemmological and mineralogical characteristics of the different coloured tourmaline samples from Minas Gerais State, Brazil, are studied by using the electron microprobe, X-ray photoelectron spectrometer, ultraviolet-visible spectrophotometry and Fourier transform infrared spectroscope.

利用电子探针、X射线光电子能谱仪、紫外－可见光光度计和傅里叶变换红外光谱仪对产自巴西Minas Gerais地区、不同颜色的彩色电气石样品进行了宝石矿物学特征研究。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。