搜索结果: 61-75 共查到“知识库 电磁学其他学科”相关记录226条 . 查询时间(2.856 秒)
Measurements of vector magnetic field using multiple electromagnetically induced transparency resonances in Rb vapor
magnetic field Rb vapor
2010/11/12
We study intensity distribution of transmission resonances under the conditions of electromagnetically induced transparency (EIT) with lin||lin configuration in 87Rb vapor. We demonstrate that for va...
We propose the partial electrification of multilane motorways in suburban areas as a practical alternative in order to reduce the weight and price of electrically-powered automobiles. These could the...
A High-resolution Scintillating Fiber Tracker With Silicon Photomultiplier Array Readout
High-resolution Scintillating Fiber Tracker Silicon Photomultiplier
2010/11/12
We present prototype modules for a tracking detector consisting of multiple layers of 0.25 mm diameter scintillating fibers that are read out by linear arrays of silicon photomultipliers. The module ...
Exponential Class of Similarity Solutions for the Hydromagnetic Falkner-Skan Equations
Exponential Class the Hydromagnetic Falkner-Skan Equations
2010/11/12
A systematic search for the Lie point symmetries admitted by the steady hydromagnetic two-dimensional incompressible viscous flow boundary layer equation and associated boundary conditions is perform...
Edge stability, reconstruction, zero-energy states and magnetism in triangular graphene quantum dots with zigzag edges
Edge stability zero-energy states magnetism
2010/11/17
We present the results of ab-initio density functional theory based calculations of the stability and reconstruction of zigzag edges in triangular graphene quantum dots. We show that, while the recons...
Jet deflection by very weak guide fields during magnetic reconnection
Jet deflection guide fields magnetic reconnection
2010/11/12
Simulations of antiparallel reconnection have shown collimated electron jets outflowing from the x-point, and associated highly elongated "outer electron diffusion regions." New PIC simulations with i...
Transitions to three-dimensional flows in a cylinder driven by oscillations of the sidewall
three-dimensional flows cylinder driven oscillations of the sidewall
2010/11/16
The transition from two-dimensional to three-dimensional flows in a finite circular cylinder driven by an axially oscillating sidewall is explored in detail. The complete symmetry group of this flow,...
Coulomb Oscillations of Indium-doped ZnO Nanowire Transistors in a Magnetic Field
Coulomb Oscillations Indium-doped ZnO Nanowire Transistors Magnetic Field
2010/11/9
We report on the observation of Coulomb oscillations from localized quantum dots superimposed on the normal hopping current in ZnO nanowire transistors. The Coulomb oscillations can be resolved up to ...
二维弹子球体系在弱磁场中的输运性质研究
圆形弹子球 量子传输 磁场 合流超几何函数
2012/3/26
本文应用半经典轨道理论研究了开放圆量子台球体系在外加磁场中的输运性质。采用半经典近似格林函数由体系本征函数得到了传输矩阵元，根据几何角度之间的关系，计算出磁场下圆腔传输的电子经典轨道，并对传输矩阵元傅里叶变换谱峰位置与电子经典轨道长度进行了对比，结果发现谱峰位置跟轨道长度吻合的很好。说明在研究微结中电子传导时，二维异质结是适用的理论模型。
Quantum entanglement between a nonlinear nanomechanical resonator and a microwave field
Quantum entanglement nonlinear nanomechanical resonator microwave field
2010/11/11
We consider a theoretical model for a nonlinear nanomechanical resonator coupled to a superconducting microwave resonator. The nanomechanical resonator is driven parametrically at twice its resonance ...
Engineering Biphoton Wave Packets with an Electromagnetically Induced Grating
Engineering Biphoton Wave Packets Electromagnetically Induced Grating
2010/11/5
We propose to shape biphoton wave packets with an electromagnetically induced grating in a four-level double-$\Lambda$ cold atomic system. We show that the induced hybrid grating plays an essential ro...
基于ＨｉｌｂｅｒｔＨｕａｎｇ变换的 大地电磁信号谱估计方法
大地电磁数据 谱估计 边际谱 频率分辨率 ＨｉｌｂｅｒｔＨｕａｎｇ变换
2013/11/14
由于大地电磁（ＭＴ）信号的非平稳特性，基于傅里叶变换的谱估计方法会带来偏差。本文提出了一种基于ＨＨＴ的边际谱估算方法，即边际谱是由Ｈｉｌｂｅｒｔ谱沿时间轴积分得到，它代表了整个信号在时间跨度上的幅值累积效应。文中证明了边际谱的线性性质，详细讨论了提高Ｈｉｌｂｅｒｔ谱估计精度的两种方法，并对仿真ＭＴ信号和实测ＭＴ信号进行了数值实验。理论与实验证明，基于ＨＨＴ的谱估计方法更符合ＭＴ信号的实际情况，能够...
Infinite disorder scaling of random quantum magnets in three and higher dimensions
Infinite disorder scaling random quantum magnets dimensions
2010/11/11
Using a very efficient numerical algorithm of the strong disorder renormalization group method we have extended the investigations about the critical behavior of the random transverse-field Ising mode...
Interaction of the Electromagnetic S-Wave with the Thin Metal Film
Interaction the Electromagnetic S-Wave Thin Metal Film
2010/11/9
It is shown that for thin metal films, thickness of which does not exceed a thickness of a skin-layer, the problem allows analytical solution for any boundary conditions. The analysis of transmission...
Single Cs Atoms as Collisional Probes in a large Rb Magneto-Optical Trap
Single Cs Atoms Collisional Probes a large Rb Magneto-Optical Trap
2010/10/29
We study cold inter-species collisions of Caesium and Rubidium in a strongly imbalanced system with single and few Cs atoms. Observation of the single atom fuorescence dynamics yields insight into lig...