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Author: EDEVALDO.. DE CAMPOS
Publisher:
ISBN:
Category :
Languages : fr
Pages : 188
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Book Description
CETTE THESE PORTE SUR L'EXCITATION D'UNE ONDE DE PLASMA PAR BATTEMENT DE DEUX ONDES ELECTROMAGNETIQUES DANS UN CAISSON MULTIPOLAIRE (CARACTERISTIQUES DU PLASMA: DENSITE 1,7.10#1#1 PARTICULES PAR CM#3, TEMPERATURE ELECTRONIQUE 3EV, VOLUME 1 M#3). LES ONDES ELECTROMAGNETIQUES DE FREQUENCE 9,3 GHZ ET 5,6 GHZ SONT EXCITEES DANS LE PLASMA A L'AIDE DE DEUX IMPULSIONS DE DUREE 1,2 MICRO SECONDES ET DE PUISSANCE CRETE 200 KW. LES RESULTATS THEORIQUES SUR CETTE EXCITATION PAR BATTEMENT ONT ETE REPRIS POUR OBTENIR LE COMPORTEMENT DE L'ONDE DE PLASMA DANS CETTE SITUATION EXPERIMENTALE: CARACTERE RESONANT DE L'EXCITATION, MECANISMES DE SATURATION. PARMI CES MECANISMES, LA DEPLETION DES ONDES SOURCE, A ETE PLUS PARTICULIEREMENT ETUDIEE ANALYTIQUEMENT ET PAR SIMULATION. L'EXPERIENCE A MIS EN EVIDENCE, LE CARACTERE RESONANT DE L'EXCITATION DE L'ONDE DE PLASMA, CELLE-CI NE SE PRODUISANT QUE DANS UN INTERVALLE DE DENSITE RELATIVE DE 0,05 POUR CENT INFERIEURE A LA RESOLUTION DE NOS MESURES. PAR AILLEURS LA DEPLETION DES ONDES SOURCES A ETE MISE EN EVIDENCE ; ELLE EST EN ACCORD AVEC LES RESULTATS DE SIMULATION
Author: EDEVALDO.. DE CAMPOS
Publisher:
ISBN:
Category :
Languages : fr
Pages : 188
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Book Description
CETTE THESE PORTE SUR L'EXCITATION D'UNE ONDE DE PLASMA PAR BATTEMENT DE DEUX ONDES ELECTROMAGNETIQUES DANS UN CAISSON MULTIPOLAIRE (CARACTERISTIQUES DU PLASMA: DENSITE 1,7.10#1#1 PARTICULES PAR CM#3, TEMPERATURE ELECTRONIQUE 3EV, VOLUME 1 M#3). LES ONDES ELECTROMAGNETIQUES DE FREQUENCE 9,3 GHZ ET 5,6 GHZ SONT EXCITEES DANS LE PLASMA A L'AIDE DE DEUX IMPULSIONS DE DUREE 1,2 MICRO SECONDES ET DE PUISSANCE CRETE 200 KW. LES RESULTATS THEORIQUES SUR CETTE EXCITATION PAR BATTEMENT ONT ETE REPRIS POUR OBTENIR LE COMPORTEMENT DE L'ONDE DE PLASMA DANS CETTE SITUATION EXPERIMENTALE: CARACTERE RESONANT DE L'EXCITATION, MECANISMES DE SATURATION. PARMI CES MECANISMES, LA DEPLETION DES ONDES SOURCE, A ETE PLUS PARTICULIEREMENT ETUDIEE ANALYTIQUEMENT ET PAR SIMULATION. L'EXPERIENCE A MIS EN EVIDENCE, LE CARACTERE RESONANT DE L'EXCITATION DE L'ONDE DE PLASMA, CELLE-CI NE SE PRODUISANT QUE DANS UN INTERVALLE DE DENSITE RELATIVE DE 0,05 POUR CENT INFERIEURE A LA RESOLUTION DE NOS MESURES. PAR AILLEURS LA DEPLETION DES ONDES SOURCES A ETE MISE EN EVIDENCE ; ELLE EST EN ACCORD AVEC LES RESULTATS DE SIMULATION
Author: Alain Aspect
Publisher:
ISBN:
Category : Electronic books
Languages : fr
Pages : 294
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Author: Chevalier François Le
Publisher: Artech House
ISBN: 9781608071357
Category : Radar
Languages : en
Pages : 422
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Author: A. A. Andronov
Publisher: Elsevier
ISBN: 1483194728
Category : Science
Languages : en
Pages : 848
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Book Description
Theory of Oscillators presents the applications and exposition of the qualitative theory of differential equations. This book discusses the idea of a discontinuous transition in a dynamic process. Organized into 11 chapters, this book begins with an overview of the simplest type of oscillatory system in which the motion is described by a linear differential equation. This text then examines the character of the motion of the representative point along the hyperbola. Other chapters consider examples of two basic types of non-linear non-conservative systems, namely, dissipative systems and self-oscillating systems. This book discusses as well the discontinuous self-oscillations of a symmetrical multi-vibrator neglecting anode reaction. The final chapter deals with the immense practical importance of the stability of physical systems containing energy sources particularly control systems. This book is a valuable resource for electrical engineers, scientists, physicists, and mathematicians.
Author: George William Nasmyth
Publisher:
ISBN:
Category : Electric arc
Languages : en
Pages : 32
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Author: Hertha Ayrton
Publisher: Cambridge University Press
ISBN: 1108052681
Category : Literary Collections
Languages : en
Pages : 521
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Book Description
Originally published in 1902, this comprehensive exploration of the electric arc represents the cutting-edge research of electrical engineer Hertha Ayrton.
Author: Jean-marc Ginoux
Publisher: World Scientific
ISBN: 9814467634
Category : Mathematics
Languages : en
Pages : 341
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Book Description
This book aims to present a new approach called Flow Curvature Method that applies Differential Geometry to Dynamical Systems. Hence, for a trajectory curve, an integral of any n-dimensional dynamical system as a curve in Euclidean n-space, the curvature of the trajectory — or the flow — may be analytically computed. Then, the location of the points where the curvature of the flow vanishes defines a manifold called flow curvature manifold. Such a manifold being defined from the time derivatives of the velocity vector field, contains information about the dynamics of the system, hence identifying the main features of the system such as fixed points and their stability, local bifurcations of codimension one, center manifold equation, normal forms, linear invariant manifolds (straight lines, planes, hyperplanes).In the case of singularly perturbed systems or slow-fast dynamical systems, the flow curvature manifold directly provides the slow invariant manifold analytical equation associated with such systems. Also, starting from the flow curvature manifold, it will be demonstrated how to find again the corresponding dynamical system, thus solving the inverse problem.
Author: Antonio De Maio
Publisher: IET
ISBN: 1613531990
Category : Technology & Engineering
Languages : en
Pages : 395
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Book Description
Modern radar detection is the new frontier for advanced radar systems capable of operating in challenging scenarios with a plurality of interference sources, both manmade and natural. Written by top researchers and recognized leaders in the field, this is the first book to provide a comprehensive understanding of the current research trends in modern radar detection. It updates readers with the latest radar signal processing algorithms now capable with high-speed computer chips and sophisticated programs. It also includes examples and applications from real systems. This is essential reading for radar systems design engineers within aerospace companies, military radar engineers, and aerospace contractors/consultants.
Author: Frederick King Vreeland
Publisher:
ISBN:
Category : Electric waves
Languages : en
Pages : 280
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Book Description
Author: Ralph Abraham
Publisher:
ISBN:
Category : Social Science
Languages : en
Pages : 156
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