Download or read book Transient Wave Propagation in Inhomogeneous Ionized Media written by B. O. Rönnäng and published by . This book was released on 1966 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: Transient wave responses of two different inhomogeneous ionized media - the exponential medium and the symmetrical Epstein layer - are studied. By means of the linearized wave equations exact expressions for the unit step wave responses are derived. In both cases they can be written in closed mathematical forms, namely as a Bessel function and a Legendre function respectively. The unit step modulated carrier responses, written as convolution integrals, are computed at different heights in the media and at different carrier frequencies, i.e. the variations of the electric field, the magnetic field and the energy flow are determined. This makes it possible to compare the exact signal envelopes with the earlier obtained approximate results. Futhermore the strong signal distortion at tunnel transmission through a thin symmetrical Epstein layer is studied in detail. (Author).
Download or read book Transient Wave Propagation in an Inhomogeneous Medium written by Michael A. GRAY and published by . This book was released on 1966 with total page 55 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electromagnetic wave propagation in a medium with an exponentially increasing charge density is studied. Both transmitted and reflected fields are found in the case of plane, monochromatic waves. The use of the bilateral Laplace transform allows the transforms of the transmitted and reflected fields to be found in the case of a step-function excitation moving with velocity c sub o previous to entering the exponential medium. The reflected and transmitted fields are found explicitly when the Bessel functions obtained as solutions can be expanded asymptotically for small argument. (Author).
Download or read book Propagation of Low and High Power Radio Waves in Ionized Media written by O. E. H. Rydbeck and published by . This book was released on 1966 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report covers investigations and research in areas covered by the following sub-titles: (a) Amplification properties and self oscillations of the pumped ionized medium, (b) Basic properties of coupled wave equations with variable coefficients, (c) Coupled waves in magneto-ionic media, (d) Coupled waves in media with streaming electrons, (e) Wave propagation in a double hump, isotropic, ionized medium, (f) Transient response of an inhomogeneous, isotropic, ionized medium. (Author).
Download or read book Transient Waves in Layered Media written by M. Tygel and published by Elsevier Publishing Company. This book was released on 1987 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: While experts in the field will benefit from the various new concepts developed in this volume, it is primarily intended as an introductory textbook for readers interested in transient wave propagation as well as plane-wave composition and decomposition approaches in stratified media. The level of treatment is suitable for advanced undergraduate/graduate students following courses in geophysics, optics, acoustics, electromagnetics, etc.
Download or read book Waves in Layered Media written by L Brekhovskikh and published by Elsevier. This book was released on 2012-12-02 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt: Waves in Layered Media discusses different theories about the relationship between waves and media. The book specifically covers several factors that can affect the behavior and formation of various kinds of waves in different types of media. Comprised of nine chapters, the book establishes the fundamentals by first tackling simplest concepts, such as the behavior plane wave and discretely layered media. The succeeding chapters cover much more complex ideas, such as the refraction and reflection of waves, spherical wave, and wave in inhomogeneous media. The book will be a great asset to researchers whose work involves acoustics, or to professionals whose line of work involves sound waves.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1983 with total page 1368 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wave Propagation in Complex Media written by George Papanicolaou and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 301 pages. Available in PDF, EPUB and Kindle. Book excerpt: This IMA Volume in Mathematics and its Applications WAVE PROPAGATION IN COMPLEX MEDIA is based on the proceedings of two workshops: • Wavelets, multigrid and other fast algorithms (multipole, FFT) and their use in wave propagation and • Waves in random and other complex media. Both workshops were integral parts of the 1994-1995 IMA program on "Waves and Scattering." We would like to thank Gregory Beylkin, Robert Burridge, Ingrid Daubechies, Leonid Pastur, and George Papanicolaou for their excellent work as organizers of these meetings. We also take this opportunity to thank the National Science Foun dation (NSF), the Army Research Office (ARO, and the Office of Naval Research (ONR), whose financial support made these workshops possible. A vner Friedman Robert Gulliver v PREFACE During the last few years the numerical techniques for the solution of elliptic problems, in potential theory for example, have been drastically improved. Several so-called fast methods have been developed which re duce the required computing time many orders of magnitude over that of classical algorithms. The new methods include multigrid, fast Fourier transforms, multi pole methods and wavelet techniques. Wavelets have re cently been developed into a very useful tool in signal processing, the solu tion of integral equation, etc. Wavelet techniques should be quite useful in many wave propagation problems, especially in inhomogeneous and nonlin ear media where special features of the solution such as singularities might be tracked efficiently.
Download or read book Invariant Imbedding and Wave Propagation in Inhomogeneous Media written by Crawford J. MacCallum and published by . This book was released on 1961 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wave Propagation in Random Media written by Joseph Bishop Keller and published by . This book was released on 1960 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Transient Wave Propagation in Anisotropic Multilayered Media written by Serdar Mesutgil and published by . This book was released on 2003 with total page 125 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Transient Wave Propagation in Dispersive Or Conducting Media written by Boppana Lakshmi Jaganmohana Rao and published by . This book was released on 1966 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Transient Wave Propagation in Spatial and Temporal Dispersive Media written by Kenneth Chien-Ying Chen and published by . This book was released on 1969 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wave Propagation in Inhomogeneous Anisotropic Media written by John R. Schulenberger and published by . This book was released on 1968 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Partial Wave Analysis of Electromagnetic Wave Propagation in Inhomogeneous Media written by Ferdinand Haverman Mitchell (Jr.) and published by . This book was released on 1965 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Electromagnetics of Time Varying Complex Media written by Dikshitulu K. Kalluri and published by CRC Press. This book was released on 1998-07-29 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent advances in the fields of materials science and electromagnetics indicate that materials can be synthesized with any desired electromagnetic properties. Electromagnetics of Complex Media provides the appropriate understanding of optimum properties for a given application, addressing the needs of researchers who study electromagnetics as a base for those disciplines using complex materials. Examples include electrooptics, plasma science and engineering, microwave engineering, and solid state devices.The book emphasizes these aspects: Dispersive medium Tunneling of power through a plasma slab by evanescent waves Characteristic waves in an anisotropic medium Transient medium and frequency shifting Green's function for unlike anisotropic media Perturbation technique for unlike anisotropic media Adiabatic analysis for modified source wave All of the above topics use one-dimensional models. Brief discussions also include chiral media, surface waves, and periodic media. The text focuses on bringing out the major effects due to each kind of complexity in the medium properties. A plasma column in the presence of a static magnetic field is at once dispersive, anisotropic, and inhomogeneous - thus the author uses plasma as the basic medium to illustrate some aspects of the transformation of an electromagnetic wave by a complex medium. Early chapters use a mathematical model that usually has one kind of complexity. The medium is often assumed to be unbounded in space or has a simple plane boundary. The field variables and the parameters are often assumed to vary in one spatial coordinate. This eliminates the use of heavy mathematics and permits the focus to be on the effect. Electromagnetics of Complex Media aims to stimulate experimental and additional theoretical and numerical work on the effects that can be obtained by the temporal and spatial modification of the magnetoplasma parameters. The book also provides the new researcher with a quick primer into the theory of using magnetoplasmas for the coherent generation of tunable radiation.
Download or read book Transient Wave Propagation in a Conducting Medium written by Boppana Lakshmi Jaganmohana Rao and published by . This book was released on 1967 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: Approximate solutions are obtained for the transient fields in an infinite or semi-infinite conducting medium excited by a step-modulated sinusoidal plane wave. A saddle point method is used to obtain a solution which is valid for relatively large times in the transient response, and a series expansion method is used to obtain a solution which is valid for small times in the transient response. A brief discussion is included on the signal velocity in a conducting medium. (Author).
Download or read book Wave Propagation in Electromagnetic Media written by Julian L. Davis and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 303 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the second work of a set of two volumes on the phenomena of wave propagation in nonreacting and reacting media. The first, entitled Wave Propagation in Solids and Fluids (published by Springer-Verlag in 1988), deals with wave phenomena in nonreacting media (solids and fluids). This book is concerned with wave propagation in reacting media-specifically, in electro magnetic materials. Since these volumes were designed to be relatively self contained, we have taken the liberty of adapting some of the pertinent material, especially in the theory of hyperbolic partial differential equations (concerned with electromagnetic wave propagation), variational methods, and Hamilton-Jacobi theory, to the phenomena of electromagnetic waves. The purpose of this volume is similar to that of the first, except that here we are dealing with electromagnetic waves. We attempt to present a clear and systematic account of the mathematical methods of wave phenomena in electromagnetic materials that will be readily accessible to physicists and engineers. The emphasis is on developing the necessary mathematical tech niques, and on showing how these methods of mathematical physics can be effective in unifying the physics of wave propagation in electromagnetic media. Chapter 1 presents the theory of time-varying electromagnetic fields, which involves a discussion of Faraday's laws, Maxwell's equations, and their appli cations to electromagnetic wave propagation under a variety of conditions.
