The effects of atom source on atom focusing are analyzed using the Monte_Carlo scheme and trajectory tracing method, and the simulation results have shown that the effective size of the target has a much more important effect on feature width than beam spread and longitudinal velocity spread.
用蒙特卡罗算法和轨迹模拟法分析原子源对原子聚焦的影响,结果表明靶的有效尺寸对纳米图形线宽的影响远大于原子束的发散角和原子的纵向速度分布。
CFP imaging techniques will separate pre-stack migration from velocity analysis recurring to two consecutive and independent focusing steps, and substitute operator updating for the direct updating of velocity filed in a traditional way, in the end calculate subsurface velocity filed using correctly updated focusing operator.
CFP成像技术借助于两个连续且相互独立的聚焦步骤 ,将叠前偏移与速度分析独立开来 ,并且用算子更新代替传统上对速度场的直接更新 ,最后从经过正确更新的聚焦算子反演出地下速度场。
A series of focusing operators describing the effects of near surface were calculated, and these operators were then used to perform wavefield redu-tuming.
在起伏地表以下选定某一水平界面作为基准面,在基准面上求取一系列的聚焦算子,这些包含了起伏地表信息的聚焦算子可用来跟初始炮记录作用进行波场重建生成新的炮记录。
The focusing operator was computed by finite-difference travel time method feasible to any rectangular grid and the CFP gather was generated by wave field continuation.
聚焦算子的计算采用适于任意矩形网格的有限差分走时计算法,用波场延拓法进行CFP道集的生成,利用约束参数迭代反演实现偏移速度的更新,模型的参数化主要依据实际情况而定。
In the mass spectrograph the ions are focused onto a photographic plate.
在质谱仪中，离子聚焦在感光板上。
mather's plasma focus apparatus
马瑟型等离子体聚焦装置
Micro-/Nano-Fabrication Using Focused Ion Beam Technology
微米/纳米加工中的聚焦离子束技术
Development of Liquid Metal Ion Source for Nanometer Focused Ion Beam System;
纳米聚焦离子束系统液态金属离子源的研制
Research on Underwater Plasma Sound Source and Its Focused Sound Field Distribution Characteristics
水下等离子体声源聚焦声场分布特性研究
Applications of focused ion beam in optical fiber probe fabrication
聚焦离子束在光纤探针制备技术中的应用
Effect of deviation distance to focal spot on spectra of the laser-induced Cu plasma in air
空气中激光聚焦位置对Cu等离子体光谱的影响
Fabrication of micro/nano structures using focused ion beam implantation technology
基于聚焦离子束注入的微纳加工技术研究
Fabrication of Complicated Micronano Structures Using Focused Ion Beam Milling Method
基于聚焦离子束铣削的复杂微纳结构制备
horizon focussing
水平聚焦 -电离层的
Studies on Influence of Laser Focus and Environment Parameters on Mechanical Effect of Laser Plasma Shock Wave;
聚焦和环境参数对激光等离子体冲击波力学效应影响的研究
The Application and Case Study of FIB System in the IC Failure Analysis;
聚焦离子束在集成电路失效分析中的应用和实例分析
Study on Micro-tools Fabrication by Focused Ion Beam Technology and Key Techniques
基于聚焦离子束技术的微刀具制造方法及关键技术的研究
A Study on Styrene Polymerization in Coking Xylene with Benzoyl Peroxide as Initiator and Ionic Liquids as Catalyst
BPO引发与离子液体催化聚合焦化二甲苯中苯乙烯的研究
Gas-Assisted Etching of Micro-Hole Lattice Array on Lithium Niobate with Focused Ion Beam
用聚焦离子束气体辅助刻蚀在LiNbO_3上制备亚微米圆孔点阵
Optimal Design of Superfocusing Lens Configuration Based on Surface Plasmon Polariton Coupling Plate
基于表面等离子体激元耦合相位板超聚焦透镜结构的优化设计
Study on Digital Image Auto-focusing and Restoration Technology of the Defocused Image
数字图像自动聚焦与离焦模糊复原技术研究
polyanionic cellulosic polymer
聚阴离子纤维素聚合物