Transient Signal Propagation In Lossless Isotropic Plasmas Volume Ii
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| Author | : Cap Haskell |
| Publisher | : |
| Total Pages | : 62 |
| Release | : 1966 |
| Genre | : Electromagnetic waves |
| ISBN | : |
The asymptotic behavior of transient signal propagation in lossless, isotropic plasmas is discussed at length for a typical input signal of a step modulated sine wave. A generalized saddlepoint integration is carried out that gives a continuous solution for the dispersed signal everywhere except at the signal wavefront. The solution for the wavefront is obtained by using a high-frequency expansion technique. Universal curves are presented for the behavior of the distorted signal as a function of the plasma frequency, signal frequency, and propagation distance. The solution is a very good approximation for plasma propagation length that are long compared to a wavelength. (Author).
| Author | : Ronald Louis Fante |
| Publisher | : |
| Total Pages | : 48 |
| Release | : 1973 |
| Genre | : Electromagnetic pulse |
| ISBN | : |
Using contour integration techniques, the authors have calculated the transient response of a lossy homogeneous isotropic plasma to a unit step and a step-carrier sine wave. It was found that in the presence of losses the temporal step function response within the plasma does not approach zero for large time as for the collisionless case, but rather approaches unity. The rate at which the transient approaches the asymptotic value of unity is strongly dependent on the losses, being quite rapid for large losses and exceedingly slow for very small losses. This result has an important impact on the propagation of EMP through the plasma sheath around a reentry vehicle, and through the ionized region near a low altitude nuclear fireball. (Author).
| Author | : Cap Haskell |
| Publisher | : |
| Total Pages | : 66 |
| Release | : 1966 |
| Genre | : Electromagnetic waves |
| ISBN | : |
The concept of the wave packet is used to obtain some general results on the propagation of signals in dispersive media. The dispersion of a Gaussian carrier pulse and a square wave carrier pulse in an isotropic plasma is carried out using the wave packet concept. A general analysis of transient wave propagation in isotropic plasmas is given using Laplace transform methods. Solutions are given in terms of series solutions which may be expressed in terms of Lommel functions. Integral solutions which can be easily evaluated numerically are derived using the convolution theorem and using contour integration techniques. The solutions are useful for short dispersion lengths.
| Author | : |
| Publisher | : |
| Total Pages | : 776 |
| Release | : |
| Genre | : Science |
| ISBN | : |
| Author | : |
| Publisher | : |
| Total Pages | : 300 |
| Release | : 1967 |
| Genre | : Aeronautics |
| ISBN | : |
| Author | : Air Force Cambridge Research Laboratories (U.S.) |
| Publisher | : |
| Total Pages | : 192 |
| Release | : 1968 |
| Genre | : Astrophysics |
| ISBN | : |
This bibliography lists all in-house reports, journal articles, and contractor reports issued from 1 July 1966 to 30 September 1967. Part I lists all in-house reports by the series in which they were issued; Part II lists all in-house reports, journal articles, and contractor reports by the Laboratory responsible for their preparation. In Part I, the reports are listed numerically by series; in Part II, in-house reports and journal articles are listed alphabetically by author, and contractor reports are listed numerically by the AFCRL report number.
| Author | : Kurt E. Oughstun |
| Publisher | : Springer |
| Total Pages | : 464 |
| Release | : 2007-12-08 |
| Genre | : Science |
| ISBN | : 0387347305 |
This volume presents a detailed, rigorous treatment of the fundamental theory of electromagnetic pulse propagation in causally dispersive media that is applicable to dielectric, conducting, and semiconducting media. Asymptotic methods of approximation based upon saddle point methods are presented in detail.
| Author | : Kurt E. Oughstun |
| Publisher | : Springer |
| Total Pages | : 753 |
| Release | : 2019-07-17 |
| Genre | : Science |
| ISBN | : 3030208354 |
This volume presents a detailed, rigorous treatment of the fundamental theory of electromagnetic pulse propagation in causally dispersive media that is applicable to dielectric, conducting, and semiconducting media. Asymptotic methods of approximation based upon saddle point methods are presented in detail.
| Author | : |
| Publisher | : |
| Total Pages | : 1336 |
| Release | : 1966 |
| Genre | : Government publications |
| ISBN | : |
| Author | : |
| Publisher | : |
| Total Pages | : 254 |
| Release | : 1967 |
| Genre | : Aerodynamics, Hypersonic |
| ISBN | : |
This volume is a collection of the unclassified papers presented at the Third Symposium on the Plasma Sheath-Plasma Electromagnetics of Hypersonic Flight. This symposium consisted of the review of progress in reentry communication studies during the three year period since the prior meeting. The program of this symposium on plasma electromagnetics of hypersonic flight involves a wide range of scientific disciplines, including electromagnetics, aerodynamics, aero-thermochemistry, plasma dynamics, electronics, and high- temperature phenomena. The papers were selected to explore as many of these facets of research, including the results of laboratory, flight, and system tests, as time permitted.
