分子束

词组短语

molecular beam · mosecular beam

与分子束相关的网络例句 [注：此内容来源于网络，仅供参考]

The photodissociation dynamics of cyclopropane at 157 nm excitation has been investigated using two different experimental instruments with different detection schemes.

在研究环丙烷在157 nm 光源激发下分解的实验中，两套使用不同侦测系统的交叉分子束实验装置分别被用来侦测反应中的光裂解碎片产物。其中一套是传统以电子撞击电离作为侦测系统的交叉分子束实验装置；另一则为最近刚建置完成的以 VUV 同步辐射光电离作为侦测器的交叉分子束实验装置。

They include: 1. A supersonic beam of NO molecule mixed with Ar atom is ionized by VUV synchrotron radiation from Hefei Light Source at National Synchrotron Radiation Laboratory.

它们包括： 1。首次利用国家同步辐射实验室合肥光源的真空紫外同步辐射，使NO分子和Ar原子混合物的超声分子束发生光电离，测量了Ar，NO和异类团簇Ar·NO的光电离效率谱。

For example, by molecular beam experiment, two or three pairs of atoms or molecules to form the so-called van der Waals molecular studies reveal a lot about the nature of the molecular force.

例如通过分子束实验，对两三个原子或分子形成的所谓范德瓦尔斯分子的研究，揭示了许多有关分子力的性质。

This project was established based on the first cooperative development of optical in situ real time detecting technique probing the atomic scale layer-by-layer epitaxy growth of oxide film. Over the last three years, we have given full play to the advantages and characteristics of both sides and have finished the assumptions and plans of this subject satisfactorily. 1. In Institute of Physics, we set up advanced oblique-incidence reflectivity difference equipment and wrote one data acquisition procedure that made the simultaneous detection of optical signal and RHEED signal into reality. 2. The first observation of sustained oscillations over hundreds of monolayers in both real and imaginary signals during the epitaxy growth of SrNb0.1Ti0.9O3 on SrTiO3 substrate in LMBE testifies that oblique-incidence is an excellent method to detect and monitor film epitaxy growth real time. 3. For the first time, we verify that oblique-incidence reflectivity difference method can be used to monitor the layer-by-layer growth mode during continuous growth through the correspondence between optical signals to atomic or molecular step edge density on the growth surface. 4. Phenomenological analysis shows that optical signals comprise three parts, the first is proportional to the average thickness of the film and depends on the bulk phase dielectric response; the second is proportional to the coverage of terraces and depends on the dielectric response of atoms or unit cells in the terrace; the third is proportional to the coverage of step edges and depends on the effective dielectric response of atoms or unit cells at step edges. This makes oblique-incident reflectivity difference technique a quantitative macroscopic method to monitor film growth.

中文摘要：本课题是在合作首次发展了氧化物薄膜原子尺度层状外延生长光学原位实时探测方法的基础上立项的，三年来，我们充分发挥双方的优势和特点，圆满完成了课题的设想和计划。1、在物理所建立了一套先进的光反射差法装置，编写了计算机系统的数据采集程序，实现了两路光学信号和RHEED数据的同步采集和显示。2、用激光分子束外延在SrTiO3基底上生长SrNb0.1Ti0.9O3薄膜，首次观测到连续外延几百个原胞层，周期振荡的光反射差实部和虚部信号，证明了光反射差法是一种能原位实时探测与监控薄膜层状外延生长的好方法。3、首次验证了通过对生长表面原子或分子台阶密度的响应，光反射差法可用于原位实时监测在连续生长条件下薄膜的层式生长模式。4、通过唯象理论的研究，证明光反射差信号由三项组成，第一项只与薄膜的平均厚度和宏观光学电介质常数有关；第二项与分子台阶面覆盖度和台阶面上分子层的光学电介质常数有关；第三项与台阶边缘的覆盖度成正比，并和在台阶边缘的分子的有效光学介电常数有关。

This dissertation includes two parts. The first part deals with study on gas-phase reactions of metal ions with ethanethiol molecule by using the laser ablation-molecular beam method and density functional calculations. The second part describes experimental and theoretical study on VUV photoionization of some molecules using synchrotron radiation.

本论文分两大部分，第一部分介绍利用激光溅射-分子束技术研究金属离子与乙硫醇的气相反应，并用密度泛函理论研究了反应形成的团簇离子的结构和特性；第二部分介绍一些分子的真空紫外同步辐射光电离，结合量化计算分析了实验结果。

With the development of molecular-beam epitaxy and microfabrication techniques, people can arrange the atoms and moleculars at will and make various zero-dimensional, one-dimensional and two-dimensional systems even single molecular devices.

随着分子束外延等超薄生长技术和精细束加工技术的不断发展和完善，使人们能够按照自己的意愿排列原子、分子，制备出各种各样的零维、一维和二维纳米结构，甚至单分子器件。

ZnO thin film ; molecular beam epitaxy ; laser molecular beam epitaxy

ZnO薄膜；分子束外延；激光分子束外延

This method can provide the overall information about the molecular velocity distribution in a beam.

我们首次利用离子速度实验方法进行了分子束速度分布测量，说明了这种方法能够提供分子束速度分布的全面信息。

Study of the biomolecules in the molecular beam is a good approach to distinguish between intrinsic molecular properties and properties resulting from the biological environment.

研究分子束中的生物分子有助于探讨生物分子的固有性质和由于生物环境而引起的其他性质之间的区别。

In addition, the detailed introduction is given on the endstation of atomic and molecular physics. The formative mechanism of molecular beam is discussed. The theory of time of flight mass spectrometry and multi-photoionization chamber are also discussed in this chapter. Last, the method of data acquisition is described.

另外，对原子分子物理实验站作了具体介绍，讨论了分子束的形成机理、飞行时间质谱仪的设计原理及多级光电离室的原理和结构，给出了该实验站仪器配备情况，并简要介绍了该实验站配套的数据采集方法。

与分子束相关的网络解释 [注：此内容来源于网络，仅供参考]

molecular asymmetry：分子不对称性

molecular beam 分子束 | molecular asymmetry 分子不对称性 | molecular association 分子联合;分子缔合

chemic：化学家, 化学 化学的

chemiadsorption | 化学吸附 | chemic | 化学家, 化学 化学的 | chemical accelerator | 化学加速剂 化学促进剂, 化学加速器(加速离子束、原子束或分子束装置)

diffusion pump：扩散帮浦

+ 束源气室是产生分子束的所在,其内装产生分子束的脉冲阀(pulsed valve),圆锥状撇取器(skimmer)及气体导管,此气室的体积约为20 L(气室外壳及所有元件的材质均为不锈钢)气室底部依序连接电动式阀门(electropneumatic gate valve),扩散帮浦(diffusion pump)及其前段的机械帮浦

Holl：霍爾

由于真空技术发展到了一定水平,著名德国物理学家O.斯特恩(Stern)用银蒸气分子束实验获得银分子有着确定的速度分布的信息,但未能给出定量的结果. 在以后的几年里许多工作者[其中有加州大学物理系主任E.E.霍尔(Holl)、I.F.蔡特曼(Ca

molecular force：分子力

分子的内部运动包括整个分子的转动,各组份原子的核分子力(molecular force) 参见分子运动论. 分子量(molecular weight) 参见分子运动论. 分子束外延(molecular beam epitaxy) 在超高真空(10-8帕)系统中将分子或原子束直接射向衬底,

beam, photolithographic：光刻线

beam, molecular 分子束 | beam, photolithographic 光刻线 | beam-deflection tube 射束偏转管

Squid：超导量子干涉仪

包括分子束外延生长系统、源炉温度控制系统、五种元素固体源(包括 Ga、As、In、Cr、Sb)、GaAs衬底、反射式高能电子衍射枪、超导量子 干涉仪(SQUID). 利用分子束外延系统生长制备zb-CrSb样品. 通过SQUID 测量zb-CrSb的基本磁性质.

Biochemic Technique：生物化学技束

普通生物学 Biology | 生物化学技束 Biochemic Technique | 分子生物学 Molecular Biology

epitaxy, molecular-beam：分子束外延

epitaxy 外延生长技术,取向附生 | epitaxy, molecular-beam 分子束外延 | epoxy 环氧

molecular packing fraction：分子紧束分数

molecular oxygen ==> 分子氧 | molecular packing fraction ==> 分子紧束分数 | molecular paleontology ==> 分子古生物学