Amplitude des échos spatiaux d'ondes de plasma électronique PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Amplitude des échos spatiaux d'ondes de plasma électronique PDF full book. Access full book title Amplitude des échos spatiaux d'ondes de plasma électronique by Gilles Matthieussent. Download full books in PDF and EPUB format.
Author: Gilles Matthieussent
Publisher:
ISBN:
Category :
Languages : fr
Pages : 63
Get Book Here
Book Description
L'AMPLITUDE DES ECHOS SPATIAUX D'ONDES DE PLASMA ELECTRONIQUE A ETE ETUDIEE EN FONCTION DE L'AMPLITUDE DES ONDES INITIALES ET DE LA DISTANCE ENTRE LES EMETTEURS. ON A OBSERVE LA SATURATION DE L'AMPLITUDE DE L'ECHO ET LE ROLE DISSYMETRIQUE JOUE PAR LES DEUX ONDES INITIALES. LES RESULTATS EXPERIMENTAUX SONT EN ACCORD AVEC UNE THEORIE NON LINEAIRE QUI TIENT COMPTE DES EFFETS COLLECTIFS ET DU TEMPS DE TRANSIT FINI DES PARTICULES DANS LES CHAMPS APPLIQUES. L'INJECTION DANS LE PLASMA D'UN SPECTRE DE BRUIT REDUIT L'AMPLITUDE DES ECHOS CONFORMEMENT A UNE THEORIE TENANT COMPTE DE LA DIFFUSION DES ELECTRONS DANS L'ESPACE DES VITESSES
Author: Gilles Matthieussent
Publisher:
ISBN:
Category :
Languages : fr
Pages : 63
Get Book Here
Book Description
L'AMPLITUDE DES ECHOS SPATIAUX D'ONDES DE PLASMA ELECTRONIQUE A ETE ETUDIEE EN FONCTION DE L'AMPLITUDE DES ONDES INITIALES ET DE LA DISTANCE ENTRE LES EMETTEURS. ON A OBSERVE LA SATURATION DE L'AMPLITUDE DE L'ECHO ET LE ROLE DISSYMETRIQUE JOUE PAR LES DEUX ONDES INITIALES. LES RESULTATS EXPERIMENTAUX SONT EN ACCORD AVEC UNE THEORIE NON LINEAIRE QUI TIENT COMPTE DES EFFETS COLLECTIFS ET DU TEMPS DE TRANSIT FINI DES PARTICULES DANS LES CHAMPS APPLIQUES. L'INJECTION DANS LE PLASMA D'UN SPECTRE DE BRUIT REDUIT L'AMPLITUDE DES ECHOS CONFORMEMENT A UNE THEORIE TENANT COMPTE DE LA DIFFUSION DES ELECTRONS DANS L'ESPACE DES VITESSES
Author: Michel Guillemot
Publisher:
ISBN:
Category :
Languages : fr
Pages : 231
Get Book Here
Book Description
Les échos d'ondes de plasma électroniques sont étudiés théoriquement à l'aide d'une méthode des trajectoires qui permet de mettre en évidence (i) les rôles dissymétriques joués par les deux ondes mères produisant l'écho, (ii) les effets de saturation lorsque l!amplitude de la deuxième onde croît. La prise en compte du profil radial de densité et de la géométrie limitée radialement fait prévoir une déformation du profil de l'écho lorsque l!amplitude de la deuxième onde varie. La diffusion dans l'espace des vitesses due aux collisions à faible angle entraîne une forte atténuation de l'écho. Les résultats expérimentaux en bon accord avec ces prévisions théoriques, permettent d'évaluer l'amplitude des ondes émises et de donner un ordre de grandeur des champs turbulents produisant la diffusion.
Author:
Publisher:
ISBN:
Category : Nuclear energy
Languages : en
Pages : 836
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category : European Communities
Languages : en
Pages : 740
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1192
Get Book Here
Book Description
Author: Thierry Passot
Publisher: American Mathematical Soc.
ISBN: 0821837230
Category : Science
Languages : en
Pages : 322
Get Book Here
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: Thomas Rossing
Publisher: Springer Science & Business Media
ISBN: 0387304460
Category : Science
Languages : en
Pages : 1179
Get Book Here
Book Description
This is an unparalleled modern handbook reflecting the richly interdisciplinary nature of acoustics edited by an acknowledged master in the field. The handbook reviews the most important areas of the subject, with emphasis on current research. The authors of the various chapters are all experts in their fields. Each chapter is richly illustrated with figures and tables. The latest research and applications are incorporated throughout, including computer recognition and synthesis of speech, physiological acoustics, diagnostic imaging and therapeutic applications and acoustical oceanography. An accompanying CD-ROM contains audio and video files.
Author:
Publisher:
ISBN:
Category : Plasma instabilities
Languages : en
Pages : 218
Get Book Here
Book Description
Author: Timothy J Mason
Publisher: Woodhead Publishing
ISBN: 1782420622
Category : Science
Languages : en
Pages : 166
Get Book Here
Book Description
This updated version of Practical Sonochemistry for advanced students and teachers in chemistry and chemical engineering conveys the increasing growth in applications and equipment to power ultrasound. Equipment now on the market offers a wider range of frequencies with more reproducible experimentation and a variety of scale-up systems. The book provides detailed descriptions of newer ultrasonic equipment and its applications, and practical laboratory uses of ultrasound technology for industrial scale performance.Modern exercises familiarise readers with recent sonochemical operations. The book also includes methods for estimating ultrasonic energy entering the system (dosimetry), which will standardise sonochemical methodology and enable practitioners to reproduce results from other laboratories. - Conveys the increasing growth in applications and equipment to power ultrasound - Provides detailed descriptions of new ultrasonic equipment and its applications and practical laboratory uses of ultrasound technology for industrial scale performance - Includes methods for estimating ultrasonic energy entering the system (dosimetry), which will standardise sonochemical methodology and enable practitioners to reproduce results from other laboratories
Author: K. G. Budden
Publisher: Cambridge University Press
ISBN: 9780521369527
Category : Science
Languages : en
Pages : 694
Get Book Here
Book Description
This book is concerned with the ionosphere and the magnetosphere, and the theory of their effect on radio waves. It includes accounts of some mathematical topics now widely used in this study, particularly W. K. B. approximations, Airy integral functions and integration by steepest descents. The subject is divided into ray theory and full wave theory. Ray theory is useful for high frequencies when the ionosphere is treated as a horizonally stratified medium. The discussion of the magnetosphere, whose structure is more complicated, includes an account of whistlers and ion cyclotron whistlers. The book has been planned both for final year undergraduates and as a reference book for research. It is suitable as a course book on radio propagation for students of physics or electrical engineering or mathematics. Some of the topics are presented from an elementary viewpoint so as to help undergraduates new to the subject. The later parts are more advanced. Because the subject is so large and has seen many important recent advances, some topics have had to be treated briefly, but there is a full bibliography with about 600 references.
