نتایج جستجو برای: electromagnetic wave

تعداد نتایج: 284062  

2006
W. Hussain

This paper is concerned with the diffraction of an electromagnetic wave by a perfectly conducting half-plane in a homogeneous bi-isotropic medium (asymptotically). Similar analysis in a source-free field is done in S. Asghar and A. Lakhtakia (1994), Planewave diffraction by a perfectly conducting half-plane in a homogeneous bi-isotropic medium. Int. J. Appl. Electromagnetics in materials, 5, (1...

2014
Ronald C. Davidson

The relativistic motion of an electron is calculated in the combined fields of a transverse helical wiggler field (axial wavelength = X0 27/k 0) and constant-amplitude, circularly polarized primary electromagnetic wave (6B , ,k) propagating in the z-direction. For particle velocity near the beat wave phase velocity w/(k + k0) of the primary wave, it is shown that the presence of a second, moder...

2006
Hiroyuki Takeda Sajeev John

We demonstrate the utility of three-dimensional 3D optical Wannier functions WF’s for quantitative description of electromagnetic wave localization and propagation in 3D photonic band gap PBG microcircuits. Using these localized “optical orbitals” we reconstruct electromagnetic waveguiding in bulk twodimensional 2D and 3D PBG materials, 2D-3D PBG heterostructures composed of 3D PBG structures i...

2017
A. Sitenko

Kinetic and tluid treatments of nonlinear wave interactions (wave mixing and electromagnetic wave scatrering) in plasmas are considered and the difference between the two approaches is discussed. Solving the kinetic equation by the method of moments makes it possible to substantiate the validity and find the applicability range of the fluid approach to the study of nonlinear plasma processes. I...

2009
W. Struyve

The deBroglie-Bohm pilot-wave theory is an interpretation of quantum theory in which the observer plays no fundamental role. In a pilot-wave theory, quantum systems are not only described by the state vector, but also by some additional variables. These additional variables, also called beables, can be particle positions, field configurations, strings, etc. In this paper we focus our attention ...

2011
D. Stamper - Kurn Wolfgang Ketterle

The Letter by Deng et al. [1] presents an analytic theoretical description of matter-wave superradiance [2] which claims to go beyond previous theoretical frameworks. I show here that the theory presented in this Letter is not a description of superradiance per se, but rather an elegant perturbative description of a Raman amplifier far away from the superradiant threshold. As such, it merely is...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید بهشتی - دانشکده علوم 1389

چکیده ندارد.

Alikhanzadeh-Arani, S, Almasi-Kashi, M, Mokarian, M H,

In this research, FeNi@PANI nanocomposites as the electromagnetic wave absorbers were prepared through two following steps. At first, FeNi alloy nanoparticles were synthesized by the one-pot polyol process, and then, in-situ polymerization method was used for the preparation of FeNi@PANI nanocomposite. The XRD pattern confirmed the formation of pure FeNi alloy with the FCC crystalline phase. Th...

2007
I. A. Barghouthi N. M. Doudin A. A. Saleh V. Pierrard

The energization of ions, due to interaction with electromagnetic turbulence (i.e. wave-particle interactions), has an important influence on H and O ions outflows in the polar region. The effects of altitude and velocity dependent wave-particle interaction on H and O ions outflows in the auroral region were investigated by using Monte Carlo method. The Monte Carlo simulation included the effec...

2004
D. L. Khokhlov

It is considered the electromagnetic wave in the frame moving transverse to the wave. Due to the velocity of the frame with respect to a preferred reference frame the oscillations of phase arise. The oscillations of phase yield the third order effect which can be seen in the Michelson-Morley experiment. The effect due to the velocity of the earth with respect to CMB is in agreement with the ani...

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