Author: Hans Henry Kuehl
Publisher:
ISBN:
Category : Electromagnetic theory
Languages : en
Pages : 282
Book Description
The general solution to the problem of the radiation of an electric dipole in a magnetically-biased cold plasma is presented. Since the magnetostatic field causes the plasma to be anisotropic, the far field is in general quite complicated. It is found that in general several waves exist, traveling in different directions with different indices of refraction. These waves interfere to produce beats and amplitude modulation, also causing the resultant time-average energy flow to have components in other than the radial direction, a result which is contrary to the isotropic case.
Electromagnetic Radiation from a Dipole in an Anisotropic Plasma
Author: Hans Henry Kuehl
Publisher:
ISBN:
Category : Electromagnetic theory
Languages : en
Pages : 282
Book Description
The general solution to the problem of the radiation of an electric dipole in a magnetically-biased cold plasma is presented. Since the magnetostatic field causes the plasma to be anisotropic, the far field is in general quite complicated. It is found that in general several waves exist, traveling in different directions with different indices of refraction. These waves interfere to produce beats and amplitude modulation, also causing the resultant time-average energy flow to have components in other than the radial direction, a result which is contrary to the isotropic case.
Publisher:
ISBN:
Category : Electromagnetic theory
Languages : en
Pages : 282
Book Description
The general solution to the problem of the radiation of an electric dipole in a magnetically-biased cold plasma is presented. Since the magnetostatic field causes the plasma to be anisotropic, the far field is in general quite complicated. It is found that in general several waves exist, traveling in different directions with different indices of refraction. These waves interfere to produce beats and amplitude modulation, also causing the resultant time-average energy flow to have components in other than the radial direction, a result which is contrary to the isotropic case.
Low Frequency Radiation from an Electric Dipole in a Cold Anisotropic Plasma
Author: Hans H. Kuehl
Publisher:
ISBN:
Category : Dielectrics
Languages : en
Pages : 1
Book Description
Expressions for the electromagnetic radiation from an electric dipole in an infinite cold anisotropic plasma are presented under the condition that the operatingfrequency is much less than the ion gyro frequency. It is found that the major portion of the radiation is concentrated along the direction of the magnetostatic field. (Author).
Publisher:
ISBN:
Category : Dielectrics
Languages : en
Pages : 1
Book Description
Expressions for the electromagnetic radiation from an electric dipole in an infinite cold anisotropic plasma are presented under the condition that the operatingfrequency is much less than the ion gyro frequency. It is found that the major portion of the radiation is concentrated along the direction of the magnetostatic field. (Author).
Radiation Phenomena in Plasmas
Author: Toshiro Ohnuma
Publisher: World Scientific
ISBN: 9789810218409
Category : Science
Languages : en
Pages : 338
Book Description
In this book, various antennae in plasmas, particle beam antennae, phase, group and ray velocity surfaces of various plasma modes, RF ray trajectories and wave fronts in inhomogeneous anisotropic plasmas, plasma waveguides, radiations in ion beams and plasma streams, and useful kinetic plasma dielectric tensor are illustrated with many interesting new phenomena in anisotropic plasmas. Many theoretical and experimental results are demonstrated with clearly understandable figures. In addition to these fields, the properties of superconducting plasmas are also presented.Results from radiation phenomena in various schemes are shown and they can be applied in many fields, e.g., space (plasma) sciences, artificial satellites in space, RF heatings of plasmas, and advanced processing plasmas. Fundamental anisotropic phenomena in anisotropic plasmas are also expected to be applicable in other anisotropic media such as anisotropic optical fibers.
Publisher: World Scientific
ISBN: 9789810218409
Category : Science
Languages : en
Pages : 338
Book Description
In this book, various antennae in plasmas, particle beam antennae, phase, group and ray velocity surfaces of various plasma modes, RF ray trajectories and wave fronts in inhomogeneous anisotropic plasmas, plasma waveguides, radiations in ion beams and plasma streams, and useful kinetic plasma dielectric tensor are illustrated with many interesting new phenomena in anisotropic plasmas. Many theoretical and experimental results are demonstrated with clearly understandable figures. In addition to these fields, the properties of superconducting plasmas are also presented.Results from radiation phenomena in various schemes are shown and they can be applied in many fields, e.g., space (plasma) sciences, artificial satellites in space, RF heatings of plasmas, and advanced processing plasmas. Fundamental anisotropic phenomena in anisotropic plasmas are also expected to be applicable in other anisotropic media such as anisotropic optical fibers.
Radiation and Propagation of Electromagnetic Waves
Author: George Tyras
Publisher: Academic Press
ISBN: 1483220516
Category : Science
Languages : en
Pages : 385
Book Description
Radiation and Propagation of Electromagnetic Waves serves as a text in electrical engineering or electrophysics. The book discusses the electromagnetic theory; plane electromagnetic waves in homogenous isotropic and anisotropic media; and plane electromagnetic waves in inhomogenous stratified media. The text also describes the spectral representation of elementary electromagnetic sources; the field of a dipole in a stratified medium; and radiation in anisotropic plasma. The properties and the procedures of Green's function method of solution, axial currents, as well as cylindrical boundaries are also considered. The book further tackles diffraction by cylindrical structures and apertures on cylindrical structures. Students taking electrical engineering or electrophysics will find the book useful.
Publisher: Academic Press
ISBN: 1483220516
Category : Science
Languages : en
Pages : 385
Book Description
Radiation and Propagation of Electromagnetic Waves serves as a text in electrical engineering or electrophysics. The book discusses the electromagnetic theory; plane electromagnetic waves in homogenous isotropic and anisotropic media; and plane electromagnetic waves in inhomogenous stratified media. The text also describes the spectral representation of elementary electromagnetic sources; the field of a dipole in a stratified medium; and radiation in anisotropic plasma. The properties and the procedures of Green's function method of solution, axial currents, as well as cylindrical boundaries are also considered. The book further tackles diffraction by cylindrical structures and apertures on cylindrical structures. Students taking electrical engineering or electrophysics will find the book useful.
Radiation from a Dipole in an Infinite, Homogeneous, Anisotropic Plasma
Author: L. B. Felsen
Publisher:
ISBN:
Category :
Languages : en
Pages : 1
Book Description
A previously derived solution is specialized here to the study of the radiation field due to an electric current dipole in an infinitely extend ed, homogeneous anisotropic plasma. The asymptotic field solution is interpreted in terms of rays along which energy propagates from the source to the observation point. The number of contributing rays, varying from zero to four, depends on the constitutive parameters and is determined by the refractive index curves for the medium. Special attention is given to transition phenomena associated with refractive index curves which have points of inflection or unbounded branches. A set of representative radiation patterns has been calculated. (Author).
Publisher:
ISBN:
Category :
Languages : en
Pages : 1
Book Description
A previously derived solution is specialized here to the study of the radiation field due to an electric current dipole in an infinitely extend ed, homogeneous anisotropic plasma. The asymptotic field solution is interpreted in terms of rays along which energy propagates from the source to the observation point. The number of contributing rays, varying from zero to four, depends on the constitutive parameters and is determined by the refractive index curves for the medium. Special attention is given to transition phenomena associated with refractive index curves which have points of inflection or unbounded branches. A set of representative radiation patterns has been calculated. (Author).
The Radiation Produced by an Arbitrarily Oriented Dipole in an Infinite, Homogeneous, Warm, Anisotropic Plasma
Author: F. V. Schultz
Publisher:
ISBN:
Category : Electromagnetic fields
Languages : en
Pages : 215
Book Description
An expression for the electric field produced by an arbitrarily oriented electric dipole in a warm, anisotropic, single-fluid plasma is derived. The radiation patterns are found for the specific example of a dipole oriented perpendicularly to the extermally impressed magnetic field, for a plasma in which omega sub p = 0.412 omega, omega sub c = 0.75 omega, omega = 3 x 10 to the 8th power radians per second, and U = 0.003 c. Results are found to be consistent with previous analyses, yet show significant changes produced by the consideration of electron temperature. Large maxima of radiation were found in the endfire direction, which are not found by the cold-plasma analysis. The procedure of analysis was to reduce the governing equations for this model to a single inhomogeneous wave equation in the electric field intensity, and to subsequently introduce a dyadic Green's function representation for the electric field intensity. The resulting homogeneous equation in the Green's function dyadic, was then Fourier-transformed, and the alebraic equations produced were then solved for the Green's function dyadic. One can, by a sixfold integration, find the field intensity due to any finite current configuration, using this result. (Author).
Publisher:
ISBN:
Category : Electromagnetic fields
Languages : en
Pages : 215
Book Description
An expression for the electric field produced by an arbitrarily oriented electric dipole in a warm, anisotropic, single-fluid plasma is derived. The radiation patterns are found for the specific example of a dipole oriented perpendicularly to the extermally impressed magnetic field, for a plasma in which omega sub p = 0.412 omega, omega sub c = 0.75 omega, omega = 3 x 10 to the 8th power radians per second, and U = 0.003 c. Results are found to be consistent with previous analyses, yet show significant changes produced by the consideration of electron temperature. Large maxima of radiation were found in the endfire direction, which are not found by the cold-plasma analysis. The procedure of analysis was to reduce the governing equations for this model to a single inhomogeneous wave equation in the electric field intensity, and to subsequently introduce a dyadic Green's function representation for the electric field intensity. The resulting homogeneous equation in the Green's function dyadic, was then Fourier-transformed, and the alebraic equations produced were then solved for the Green's function dyadic. One can, by a sixfold integration, find the field intensity due to any finite current configuration, using this result. (Author).
Journal of Research, National Bureau of Standards
Author: United States. National Bureau of Standards
Publisher:
ISBN:
Category : Ionospheric radio wave propagation
Languages : en
Pages : 1400
Book Description
Publisher:
ISBN:
Category : Ionospheric radio wave propagation
Languages : en
Pages : 1400
Book Description
Journal of Research
Author: United States. National Bureau of Standards
Publisher:
ISBN:
Category : Radio
Languages : en
Pages : 934
Book Description
Publisher:
ISBN:
Category : Radio
Languages : en
Pages : 934
Book Description
Plasma Physics and Magnetohydrodynamics
Author: Defense Documentation Center (U.S.)
Publisher:
ISBN:
Category : Magnetohydrodynamics
Languages : en
Pages : 290
Book Description
Publisher:
ISBN:
Category : Magnetohydrodynamics
Languages : en
Pages : 290
Book Description
Dipole Radiation in a Linear Anisotropic Compressible Plasma
Author: John Dennis Norgood
Publisher:
ISBN:
Category : Antennas (Electronics)
Languages : en
Pages :
Book Description
Publisher:
ISBN:
Category : Antennas (Electronics)
Languages : en
Pages :
Book Description