Plane Wave Propagation In A Nonlinear Inhomogeneous Time Dependent Plasma Medium
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Plane Wave Propagation In A Nonlinear Inhomogeneous Time Dependent Plasma Medium
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Author : Robert John Papa
language : en
Publisher:
Release Date : 1965
Plane Wave Propagation In A Nonlinear Inhomogeneous Time Dependent Plasma Medium written by Robert John Papa and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Inhomogeneous materials categories.
Plane Wave Propagation In A Nonlinear Inhomogeneous Time Dependent Plasma Medium
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Author : R. J. Papa
language : en
Publisher:
Release Date : 1965
Plane Wave Propagation In A Nonlinear Inhomogeneous Time Dependent Plasma Medium written by R. J. Papa and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Inhomogeneous materials categories.
Numerical solutions to the energy balance equation and continuity equation have been obtained for the electron gas representing the nonlinear interaction of a radio-frequency plane wave with a time-varying and spatially varying electron density profile. Graphs are presented which depict the time-dependent response of the electron density and electron temperature when the inhomogeneous plasma is subjected to a monochromatic, radio-frequency plane wave. The interaction with a plasma medium is extended to the anisotropic case. An elliptically polarized plane wave incident upon an electron density profile induces changes in the electron temperature and electron density. A dc magnetic field parallel to the electron density gradients causes the elliptically polarized wave to split into two distinct modes, right and left circularly polarized modes, which are coupled through an energy balance equation for the electron gas that governs the electron temperature. The time-dependent response of the plasma is found by numerically integrating an energy balance equation and a continuity equation. The wave field in the time-dependent, anisotropic medium is expressed as a superposition of a right and left circularly polarized mode. The solution to the wave equation is obtained through the use of the WKB approximation. (Author).
The Nonlinear Interaction Of An Electromagnetic Wave With A Time Dependent Plasma Medium
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Author : Robert J. Papa
language : en
Publisher:
Release Date : 1964
The Nonlinear Interaction Of An Electromagnetic Wave With A Time Dependent Plasma Medium written by Robert J. Papa and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1964 with Plasma (Ionized gases) categories.
A one-dimensional, inhomogeneous model is used to describe the nonlinear interaction of a radiofrequency plane wave with a time-varying plasma medium. A nonlinear constitutive relationship is derived relating the macroscopic-current density to the impressed electric vector, assuming that the wave field is almost monochromatic in the medium. The time-dependent response of the plasma medium may be found by numerically solving the energy-balance equations and the continuity equation for the electron gas. The electron temperature is expressed in the form of a difference equation where the effects of the thermal conductivity of the electron gas may be included. The spread in frequency of the electromagnetic wave field due to the time-varying electrical conductivity may be computed by employing the WKB approximation as a solution to the wave equation for a time-varying medium. (Author).
Nonlinear Electromagnetic Wave Propagation In Plasmas
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Author : Robert J. Papa
language : en
Publisher:
Release Date : 1966
Nonlinear Electromagnetic Wave Propagation In Plasmas written by Robert J. Papa and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1966 with Nonlinear waves categories.
A review is presented of the current literature pertaining to high power rf field-plasma interactions. In the survey, the class of nonlinear interactions is restricted to the case where the effective dielectric constant of the plasma is a function of the local electric field intensity. Since the propagation characteristics of an em wave depend upon the effective dielectric constant, the presence of an intense rf field can modify the propagation characteristics of an em wave. The assumptions and basic theoretical approach of each author are discussed and the most significant results are summarized. The approaches used by different authors are compared. A critique is made of the various appraches and their advantages and limitations are pointed out. (Author).
The Nonlinear Interaction Of An Electromagnetic Wave With A Time Dependent Plasma Medium
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Author : Robert J. Papa
language : en
Publisher:
Release Date : 1964
The Nonlinear Interaction Of An Electromagnetic Wave With A Time Dependent Plasma Medium written by Robert J. Papa and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1964 with Plasma (Ionized gases) categories.
On Measuring The Radar Cross Sections Of Ducks And Chickens
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Author : P. Blacksmith (Jr.)
language : en
Publisher:
Release Date : 1965
On Measuring The Radar Cross Sections Of Ducks And Chickens written by P. Blacksmith (Jr.) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Chickens categories.
Optimum Binary Fsk For Transmitted Reference Systems Over Rayleigh Fading Channels
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Author : Neil J. Bershad
language : en
Publisher:
Release Date : 1965
Optimum Binary Fsk For Transmitted Reference Systems Over Rayleigh Fading Channels written by Neil J. Bershad and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Decision theory categories.
It is well known that in communicating over randomly time-varying channels, a receiver which performs a channel measurement can make a better decision than one that does not. It is shown that a channel-measuring system improves system performance even when the channel characteristics are fixed only during the present message interval. The randomly time-varying channel studied is that of a Rayleigh fading medium with independently fading mark and space channels whose fading is fixed over one baud interval but is independent from baud to baud. The transmission system is a modified frequency shift keying (FSK) system such that during a portion of a baud interval the mark and space frequencies are always transmitted so as to act as reference signals. For the above system, the following characteristics have been established: (a) Optimum receiver configuration, (b) Optimum ratio alpha of information energy to total signal energy as a function of total available signal-to-noise ratio for a single fading channel, (c) Asymptotic optimum alpha for an M-diversity channel, (d) Error probabilities for (b) and asymptotic error probabilities for (c) for alpha opt as a function of total signal-to-noise ratio. The asymptotic results show that by using reference techniques the order of diversity is effectively doubled. (Author).
Calculated Cross Sections For Atomic Displacements Produced By Electrons In The 1 0 3 0 Mev Energy Range
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Author : Edward A. Burke
language : en
Publisher:
Release Date : 1965
Calculated Cross Sections For Atomic Displacements Produced By Electrons In The 1 0 3 0 Mev Energy Range written by Edward A. Burke and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Cross sections (Nuclear physics) categories.
The Paraboloid Mirror
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Author : Carlyle J. Sletten
language : en
Publisher:
Release Date : 1965
The Paraboloid Mirror written by Carlyle J. Sletten and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Satellite dish antennas categories.
The Control Of Electromagnetic Scattering By Impedance Loading
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Author : J. K. Schindler
language : en
Publisher:
Release Date : 1965
The Control Of Electromagnetic Scattering By Impedance Loading written by J. K. Schindler and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Electromagnetism categories.