Etude classique relativiste de l'interaction d'un électron, dans le vide puis dans un plasma, avec une onde électromagnétique intense PDF Download
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Author: Alain Beaufils de la Rancheraye
Publisher:
ISBN:
Category :
Languages : fr
Pages : 334
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Author: Alain Beaufils de la Rancheraye
Publisher:
ISBN:
Category :
Languages : fr
Pages : 334
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Author: CHRISTIAN.. PEUGNET
Publisher:
ISBN:
Category :
Languages : fr
Pages : 362
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Book Description
L'INTERACTION FAISCEAU D'ELECTRONS RELATIVISTES-CIBLE MINCE EST ETUDIEE DANS LE BUT DE RECHERCHER LES CONDITIONS D'UN DEPOT D'ENERGIE ELEVE. UNE INTERACTION CLASSIQUE SE TRADUIT PAR UN DEPOT D'ENERGIE FAIBLE, CELUI-CI NE PEUT AUGMENTER QUE S'IL Y A ALLONGEMENT DE LA TRAJECTOIRE ELECTRONIQUE DANS LA CIBLE. LES CHAMPS ELECTRIQUES ET MAGNETIQUES PEUVENT ETRE UTILISES A CETTE FIN. L'EXPERIENCE MONTRE QUE L'INTERACTION EST MAXIMALE EN FIN D'IMPULSION OU L'ON CONSTATE UNE AUGMENTATION DU COURANT ET UNE CHUTE DE LA TENSION. LE COURANT ATTEINT 200 KA ET LA TENSION ANODE CATHODE CHUTE DE 800 KV A UNE VALEUR PRATIQUEMENT NULLE. DURANT UNE GRANDE PARTIE DE L'IMPULSION LE COURANT EST TRANSMIS DE FACON CLASSIQUE. LE MAXIMUM D'ENERGIE ABSORBEE PAR UNE CIBLE D'OR DE 4 MU M SUR UN DIAMETRE DE 1,5 MM EST DE 90 JOULES
Author: IGOR.. KOSTIOUKOV
Publisher:
ISBN:
Category :
Languages : fr
Pages : 151
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DES PROGRES RECENTS DANS LES TECHNOLOGIES MICRO-ONDES ET LES LASER DE PUISSANCE, UTILISANT LA COMPRESSION DE PULSE PAR DERIVE DE FREQUENCE, PERMETTENT MAINTENANT D'EXPLORER LE REGIME RELATIVISTE DE L'INTERACTION RAYONNEMENT-PLASMA. CES PROGRES MOTIVENT LES ETUDES PRESENTEES DANS CETTE THESE. DIFFERENTES ETUDES D'INTERACTIONS ENTRE UN CHAMP INTENSE ET UNE CIBLE GAZEUSE SONT AINSI DEVELOPPEES. AU NIVEAU METHODOLOGIQUE LA MECANIQUE HAMILTONIENNE RELATIVISTE ET LA THEORIE DES PERTURBATIONS CONSTITUENT LES OUTILS DE BASE POUR CES DIFFERENTES ETUDES. UN NOUVEAU THEOREME RELIANT LES PERTURBATIONS DU DEUXIEME ORDRE ET LES PERTURBATIONS DU PREMIER ORDRE EST DEMONTRE. DANS LA LIMITE DES CONFIGURATIONS CHAMP PARTICULE UNIDIMENSIONNELLES NON RELATIVISTES CE THEOREME SE REDUIT A LA RELATION D'EINSTEIN. AU NIVEAU PHENOMENOLOGIQUE PLUSIEURS CONFIGURATIONS D'INTERET PRATIQUE SONT CONSIDEREES. LA PROBLEME DU CHAUFFAGE STOCHASTIQUE DANS LES CONFIGURATIONS DE CHAMPS RENVERSES EST RESOLU ET LES APPLICATIONS AUX DECHARGES BASSES PRESSION CONSIDEREES. L'ETUDE DE L'ABSORPTION/EMISSION COLLISIONELLE INVERSE EN REGIME RELATIVISTE EST AUSSI CONSIDERE ET LE CALCUL DES COEFFICIENTS PRESENTE DANS LA LIMITE DES GRANDS PARAMETRES D'IMPACT. SUR LA BASE DE CES RESULTATS LA THEORIE CINETIQUE DU CHAUFFAGE STOCHASTIQUE DANS LES CONFIGURATION RENVERSEES EST DEVELOPPEE. AFIN D'ETENDRE LES ETUDES DE RAYONNEMENT L'ETUDE DE L'EMISSION/ABSORPTION EN REGIME ULTRA INTENSE EST ETENDU AU CAS QUANTIQUE ET LA SERIE INFINIE RESOMME POUR PERMETTRE L'ETUDE DU SCALING DE CE PROCESSUS. DANS UN TEL REGIME FORTEMENT NON LINEAIRE LE COUPLAGE EST FONCTION DE LA POLARISATION ET LES CAS CIRCULAIRES ET RECTILIGNES DOIVENT ETRE CONSIDERES SEPAREMENT. ENFIN UN FORMALISME POUR L'ETUDE DE L'INTERACTION ENTRE DES SOLITONS DE LANGMUIR ET UN FAISCEAU D'ELECTRONS EST PRESENTE.
Author: Bernard Voyer
Publisher:
ISBN:
Category :
Languages : fr
Pages :
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Author: OLIVIER.. HAEBERLE
Publisher:
ISBN:
Category :
Languages : fr
Pages : 125
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Book Description
L'EFFET SMITH-PURCELLE A ETE LARGEMENT ETUDIE DEPUIS LA PREDICTION DE SON EXISTENCE EN 1942 ET SA PREMIERE CONFIRMATION EXPERIMENTALE EN 1953. LES MODELES THEORIQUES PRECEDEMMENT EXISTANTS SUPPOSENT UN ELECTRON SE PROPAGEANT PARALLELEMENT A LA SURFACE DU RESEAU DE DIFFRACTION ET PERPENDICULAIREMENT AUX TRAITS DU RESEAU. DANS LE CHAPITRE PREMIER EST EXPOSEE DANS LE CADRE D'UNE THEORIE ELECTROMAGNETIQUE LA DESCRIPTION DE L'EFFET SMITH-PURCELL POUR UN ELECTRON SE PROPAGEANT PARALLELEMENT A LA SURFACE D'UN RESEAU DE DIFFRACTION AVEC UN ANGLE ARBITRAIRE PAR RAPPORT AUX TRAITS DU RESEAU. LE MODELE PROPOSE EST RESTREINT AU CAS DES SURFACES PARFAITEMENT CONDUCTRICES, POUR LESQUELLES QUELQUES TECHNIQUES MODERNES DE RESOLUTION DU PROBLEME DE RESEAU ONT ETE ADAPTEES A LA CONFIGURATION PARTICULIERE DU CHAMP INCIDENT. CES TECHNIQUES SONT DECRITES DANS LE SECOND CHAPITRE. DANS LE CHAPITRE TROIS, LE RAYONNEMENT DE SMITH-PURCELL PRODUIT PAR DES ELECTRONS RELATIVISTES D'ENERGIE 1 A 100 MEV EN INTERACTION AVEC DES RESEAUX MILLIMETRIQUES EST CALCULE EN UTILISANT LES THEORIES PRECEDEMMENT DEVELOPPEES. LES PROPRIETES DU RAYONNEMENT SONT DECRITES ET QUELQUES APPLICATIONS POTENTIELLES SONT PROPOSEES. L'ACCELERATEUR GELINA UTILISE POUR LA REALISATION DES EXPERIENCES SMITH-PURCELL EST DECRIT DANS LE CHAPITRE QUATRE. DANS LE CHAPITRE CINQ, LES EXPERIENCES SMITH-PURCELL SONT DECRITES. LES DISTRIBUTIONS SPECTRALES ET ANGULAIRES, LA POLARIZATION ET LA DEPENDANCE PAR RAPPORT A L'ENERGIE DES ELECTRONS DU RAYONNEMENT OBTENU PAR INTERACTION D'ELECTRONS DE 20 A 110 MEV AVEC DES RESEAUX OPTIQUES SONT PRESENTEES
Author: Michel Gazaix
Publisher:
ISBN:
Category :
Languages : fr
Pages : 204
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Author: Claude Cohen-Tannoudji
Publisher: John Wiley & Sons
ISBN: 3527345558
Category : Science
Languages : en
Pages : 790
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Book Description
This new, third volume of Cohen-Tannoudji's groundbreaking textbook covers advanced topics of quantum mechanics such as uncorrelated and correlated identical particles, the quantum theory of the electromagnetic field, absorption, emission and scattering of photons by atoms, and quantum entanglement. Written in a didactically unrivalled manner, the textbook explains the fundamental concepts in seven chapters which are elaborated in accompanying complements that provide more detailed discussions, examples and applications. * Completing the success story: the third and final volume of the quantum mechanics textbook written by 1997 Nobel laureate Claude Cohen-Tannoudji and his colleagues Bernard Diu and Franck Laloë * As easily comprehensible as possible: all steps of the physical background and its mathematical representation are spelled out explicitly * Comprehensive: in addition to the fundamentals themselves, the books comes with a wealth of elaborately explained examples and applications Claude Cohen-Tannoudji was a researcher at the Kastler-Brossel laboratory of the Ecole Normale Supérieure in Paris where he also studied and received his PhD in 1962. In 1973 he became Professor of atomic and molecular physics at the Collège des France. His main research interests were optical pumping, quantum optics and atom-photon interactions. In 1997, Claude Cohen-Tannoudji, together with Steven Chu and William D. Phillips, was awarded the Nobel Prize in Physics for his research on laser cooling and trapping of neutral atoms. Bernard Diu was Professor at the Denis Diderot University (Paris VII). He was engaged in research at the Laboratory of Theoretical Physics and High Energy where his focus was on strong interactions physics and statistical mechanics. Franck Laloë was a researcher at the Kastler-Brossel laboratory of the Ecole Normale Supérieure in Paris. His first assignment was with the University of Paris VI before he was appointed to the CNRS, the French National Research Center. His research was focused on optical pumping, statistical mechanics of quantum gases, musical acoustics and the foundations of quantum mechanics.
Author: Thierry Passot
Publisher: American Mathematical Soc.
ISBN: 0821837230
Category : Science
Languages : en
Pages : 322
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Book Description
This book covers a variety of topics related to kinetic theory in neutral gases and magnetized plasmas, with extensions to other systems such as quantum plasmas and granular flows. A comprehensive presentation is given for the Boltzmann equations and other kinetic equations for a neutral gas, together with the derivations of compressible and incompressible fluid dynamical systems, and their rigorous justification. Several contributions are devoted to collisionless magnetized plasmas. Rigorous results concerning the well-posedness of the Vlasov-Maxwell system are presented. Special interest is devoted to asymptotic regimes where the scales of variation of the electromagnetic field are clearly separated from those associated with the gyromotion of the particles. This volume collects lectures given at the Short Course and Workshop on Kinetic Theory organized at the Fields Institute of Mathematical Sciences in Toronto during the Spring of 2004.
Author: E. R. Tracy
Publisher: Cambridge University Press
ISBN: 0521768063
Category : Computers
Languages : en
Pages : 545
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Book Description
This complete introduction to the use of modern ray tracing techniques in plasma physics describes the powerful mathematical methods generally applicable to vector wave equations in non-uniform media, and clearly demonstrates the application of these methods to simplify and solve important problems in plasma wave theory. Key analytical concepts are carefully introduced as needed, encouraging the development of a visual intuition for the underlying methodology, with more advanced mathematical concepts succinctly explained in the appendices, and supporting Matlab and Raycon code available online. Covering variational principles, covariant formulations, caustics, tunnelling, mode conversion, weak dissipation, wave emission from coherent sources, incoherent wave fields, and collective wave absorption and emission, all within an accessible framework using standard plasma physics notation, this is an invaluable resource for graduate students and researchers in plasma physics.
Author: Robert A. Helliwell
Publisher: Courier Corporation
ISBN: 0486151212
Category : Technology & Engineering
Languages : en
Pages : 370
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Book Description
The investigation of whistlers and related phenomena is a key element in studies of very-low-frequency propagation, satellite communication, the outer ionosphere, and solar-terrestrial relationships. This comprehensive text presents a history of the study of the phenomena and includes all the elements necessary for the calculation of the characteristics of whistlers and whistler-mode signals. An introduction and brief history are followed by a summary of the theory of whistlers and a detailed explanation of the calculation of their characteristics. Succeeding chapters offer a complete atlas of a variety of whistlers, including those observed in satellites and those generated by nuclear explosions; the results of satellite observation of whistler-mode propagation; the method of reducing whistler data and obtaining electron density information; a full atlas of the various kinds of emissions; and an outline and comparison of the theories of generation of emissions.
