Resonant interaction of electromagnetic waves in the defective photon crystal bordering on conducting medium

2016 ◽  
Author(s):  
N. N. Beletskii ◽  
S. A. Borysenko
Keyword(s):  
Electromagnetic Waves ◽  
Resonant Interaction ◽  
Conducting Medium ◽  
Photon Crystal

Discussions and Communications: Propagation of Transient Electromagnetic Waves in a Conducting Medium

Geophysics ◽  
1955 ◽  
Vol 20 (4) ◽  
pp. 959-961 ◽  
Keyword(s):  
Electric Field ◽  
Electric Fields ◽  
Electromagnetic Waves ◽  
Step Function ◽  
Conducting Medium ◽  
Initial Value ◽  
Transient Electromagnetic ◽  
Ramp Function

Wait (1951) has calculated the transient electric fields for several types of step-function current sources placed inside a conducting medium. Now any generated pulse will require a finite build-up time to reach its final magnitude from its initial value of zero. In most cases, this type of pulse may be very well approximated by a ramp-function pulse (Figure 1). Expressions for the electric field of this type of pulse will be deduced in the following analysis.

Nonlinear interaction between three ordinary electromagnetic modes

1977 ◽  
Vol 17 (1) ◽  
pp. 51-55
Author(s):  
P. Muñoz ◽  
S. Dagach
Keyword(s):  
Magnetic Field ◽  
Normal Mode ◽  
Drift Velocity ◽  
Coupling Coefficient ◽  
Constant Magnetic Field ◽  
Nonlinear Interaction ◽  
Electromagnetic Waves ◽  
Resonant Interaction ◽  
Lagrangian Method

In this paper we consider the resonant interaction between three modified ordinary electromagnetic waves, which propagate perpendicular to a constant magnetic field. We show that for the modified mode to be a normal mode we must have the unperturbed current equal to zero. Using the averaged Lagrangian method, we calculate the coupling coefficient for the resonant interaction between three of these modes. It is proportional only to the cube of the drift velocity, as expected from the vanishing of the unperturbed current.

Resonant interaction of electron cyclotron waves with a plasma containing arbitrarily drifting suprathermal electrons

1985 ◽  
Vol 34 (2) ◽  
pp. 319-326 ◽  
Author(s):  
A. Orefice
Keyword(s):  
Electromagnetic Waves ◽  
Electron Distribution Function ◽  
Resonant Interaction ◽  
Electron Cyclotron ◽  
Dielectric Tensor ◽  
Suprathermal Electrons ◽  
Relativistic Treatment ◽  
Electron Cyclotron Waves ◽  
Plasma Dispersion ◽  
The Magnetic Field

A relativistic treatment of the plasma dispersion functions and of the dielectric tensor for electron cyclotron electromagnetic waves is given for non-thermal plasmas where the electron distribution function can be represented as a combination of Maxwellians with arbitrary drifts along the magnetic field.

Spectrum of the Coupled Waves in Magnetics Having the Ferromagnetic Spiral

2012 ◽  
Vol 190 ◽  
pp. 257-260 ◽  
Author(s):  
Igor V. Bychkov ◽  
Vasiliy D. Buchelnikov ◽  
D.A. Kuzmin ◽  
V.V. Shadrin
Keyword(s):  
Magnetic Structure ◽  
Electromagnetic Waves ◽  
Resonant Interaction ◽  
Spiral Magnetic Structure

The spectrum of coupling spin and electromagnetic waves for magnetic having spiral magnetic structure defined by non-uniform exchange and relativistic interactions have been received. The possibility of resonant interaction of spin and electromagnetic waves has been shown. The electromagnetic waves reflectance for the layer of magnetic having ferromagnetic spiral has been calculated for different angles of spiral.

scholarly journals ANALOGOUS DISPERSION PROPERTIES OF SURF ZONE AND ELECTROMAGNETIC WAVES

1982 ◽  
Vol 1 (18) ◽  
pp. 10
Author(s):  
Fritz Busching
Keyword(s):  
Electromagnetic Waves ◽  
Surf Zone ◽  
Resonant Interaction ◽  
Resonance Absorption ◽  
Anomalous Dispersion ◽  
Dispersion Property ◽  
Dispersion Properties ◽  
Interaction Processes

Resonant interaction processes in the surf zone are marked by an anomalous dispersion property (dc/df > 0) as it is well known from resonance absorption processes of electromagnetic waves in dielectrics.

VLF emission stimulated by parallel electric fields

1985 ◽  
Vol 34 (1) ◽  
pp. 47-66 ◽  
Author(s):  
B. Juhl ◽  
R. A. Treumann
Keyword(s):  
Electric Field ◽  
Electric Fields ◽  
Electromagnetic Waves ◽  
Resonant Interaction ◽  
Alfven Wave ◽  
Emission Region ◽  
Parallel Electric Field ◽  
Loss Cone ◽  
Excitation Region ◽  
Cone Field

We study the influence of a weak quasi-static parallel electric field on the stability of electromagnetic plasma waves. Using an operator calculus to solve the Boltzmann-Maxwell equations we derive a dispersion relation for the electromagnetic waves. Assuming that the electrons have a loss-cone distribution, the real frequency of waves in the whistler band is not changed by the presence of the electric field. Resonant interaction damps the HF waves for propagation parallel to the electric field. In the case of opposite propagation, a new HF excitation is found at frequencies ω ≲ ωce The width of the excitation region depends on the width of the loss cone, field strength and collision frequency. This result is applied to observations of the splitting of VLF emissions under natural conditions in the magnetosphere. It is found that the observed splitting could have been caused by the presence of the weak parallel electric field of a kinetic (shear) Alfvén wave in the emission region, which is quasi-stationary compared with the growth of the observed VLF emission.

Propagation of electromagnetic waves in a density-modulated plasma

1991 ◽  
Vol 45 (2) ◽  
pp. 173-190 ◽  
Author(s):  
Maurizio Lontano ◽  
Nicolai Lunin
Keyword(s):  
Electromagnetic Wave ◽  
Transmission Coefficient ◽  
Electromagnetic Waves ◽  
Electromagnetic Wave Propagation ◽  
Plasma Layer ◽  
Single Layer ◽  
Resonant Interaction ◽  
Explicit Computation ◽  
Single Plasma

The properties of electromagnetic wave propagation in a uniformly densitymodulated plasma are studied, starting from a unidimensional scalar wave (Hill) equation for the wave electric field. Introduction of the formalism of the spatial propagator Q(z2, z1), from the point z1 to the point z2 allows reduction of the problem to determination of the propagator relevant to a single plasma layer that constitutes the entire periodic structure. The transmission coefficient of a single layer can be computed for any kind of density profile by means of the Magnus approximation, satisfying energy flux conservation at each order in the relevant expansion. The appearance of ‘forbidden zones’ in parameter space leads to the possibility that the incident electromagnetic wave can be partially or completely reflected if a sufficient number of periods are present. The explicit computation of the transmission coefficient for a series of n successive layers confirms this effect as the result of a ‘resonant’ interaction of the incident wave and the ‘periodicity’ of the medium.

Sign in / Sign up

Export Citation Format

Share Document