Download or read book ETUDE EXPERIMENTALE DU DEPLACEMENT SPECTRAL DE POLARISATION DANS LES PLASMAS DENSES written by PASCAL.. LEMAIRE and published by . This book was released on 1985 with total page 139 pages. Available in PDF, EPUB and Kindle. Book excerpt: ETUDE EXPERIMENTALE DU DEPLACEMENT SPECTRAL DU A LA PRESENCE D'ELECTRONS LIBRES D'UN PLASMA DENSE PRODUIT PAR LASER, DANS LE CORTEGE ELECTRONIQUE DE L'ION EMETTEUR. LA MISE EN EVIDENCE DE CET EFFET, APPELE DEPLACEMENT SPECTRAL DE POLARISATION, A ETE OBTENUE POUR LES TRANSITIONS LYMAN ALPHA ET LYMAN BETA DU LITHIUM HYDROGENOIDE. ETUDE DE L'EVOLUTION DES PROFILS DES RAIES AVEC LE FLUX LASER ET LA LOCALISATION DE L'OBSERVATION

Download or read book ETUDE THEORIQUE DU DEPLACEMENT DES RAIES SPECTRALES PAR EFFET DE POLARISATION DANS LES PLASMAS DENSES written by DJAMEL.. BENREDJEM and published by . This book was released on 1986 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: LE DEPLACEMENT DES RAIES DE L'HELIUM HYDROGENOIDE EMISES DANS LES PLASMAS DENSES A ETE CALCULE EN CONSIDERANT L'EFFET DES ELECTRONS LIBRES ET CELUI DES IONS PERTURBATEURS SUR L'EMETTEUR. LE PREMIER, DETERMINE PAR UNE METHODE DE POTENTIEL AUTO-CONSISTANT, INDUIT UN DEPLACEMENT VERS LE ROUGE ALORS QUE LE SECOND, CALCULE PAR PERTURBATION, DECALE LES RAIES VERS LE BLEU. DEUX METHODES DE CALCUL DE CETTE GRANDEUR ONT ETE DEVELOPPEES: L'UNE PERMET D'EVALUER LE DEPLACEMENT COMME MOMENT SPECTRAL DU PROFIL COMPLET; L'AUTRE, PLUS SIMPLE, SEPARE LES DEUX CONTRIBUTIONS ET PEUT S'APPLIQUER A DES ETATS TRES EXCITES. LES RESULTATS THEORIQUES OBTENUS SONT EN ACCORD QUANTITATIF AVEC LES EXPERIENCES LES PLUS RECENTES

Download or read book tude exp rimentale du transport de l nergie radiative dans les plasmas denses par spectroscopie d absorption et d mission written by Maylis Dozières and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ce travail de thèse est une étude expérimentale, basée sur la spectroscopie d'émission et d'absorption de plasmas chauds et denses créés par une impulsion laser nanoseconde. La physique atomique au sein de ce type de plasmas représente un sujet complexe et de grand intérêt, notamment dans les domaines de l'astrophysique ou de la fusion par confinement inertiel. Du point de vue de la physique atomique, cela revient à déterminer des paramètres tels que l'ionisation moyenne ou l'opacité en fonction de la température électronique et de la densité de matière du milieu. Les codes de physique atomique ont alors besoin de données expérimentales pour se développer et être validés afin qu'ils soient prédictifs sur une large gamme de plasmas. Dans ce travail nous nous concentrons sur des plasmas dont la température électronique varie de 10 eV à plus d'une centaine d'électron-volts pour des densités de matière allant de 10−5 à 10−2 g/cm3. Dans ce manuscrit on distingue deux types de données spectroscopiques qui sont toutes les deux utiles et nécessaires au développement des codes de physique atomique car elles sont caractéristiques de l'état du plasma étudié : 1) des spectres d'absorption obtenus avec des plasmas proche de l'équilibre thermodynamique local de Cu, de Ni et d'Al ; 2) des spectres d'émission obtenus avec des plasmas hors équilibre thermodynamique local de C, d'Al et de Cu. Ce travail met en lumière différentes techniques expérimentales ainsi que diverses comparaisons avec des codes de physique atomique et d'hydrodynamique.

Download or read book tude th orique et exp rimentale des effets de hautes densit s dans les spectres X mis par les plasmas de laser written by Philippe Malnoult and published by . This book was released on 1989 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt: La physique atomique est fondamentale dans les relations d'équilibre et les méthodes de diagnostic pour les plasmas laser. Dans le but d'étendre la théorie des perturbations spectrales à des plasmas ultradenses, nous avons exploré la structure des molécules transitoires qui se forment lors des fluctuations de la position des ions dans les plasmas denses et relativement chauds. Un premier calcul basé sur la distribution uniforme des électrons a permis d'obtenir le potentiel sous forme analytique. Les énergies de transition obtenues révèlent l'excitation de nouvelles composantes spectrales et un important rétrécissement de la largeur Stark des raies. Ce modèle a de plus fourni des conditions initiales adéquates pour un calcul plus général où l'équation de Schrödinger est couplée à l'équation de Poisson dans le cadre d'une théorie à champs autoconsistants. Des mesures spectroscopiques ont été effectuées sur les plasmas obtenus en irradiant des cibles de LiF par un faisceau laser au Néodyme à fréquence quadruple (0.263 μm). Afin de discriminer les effets de transfert radiatif et d'inhomogénéité transverse des effets de perturbation dûs aux particules, l'épaisseur de cible a été calibrée entre 40 et 120 μm. Par une comparaison théorie expérience des spectres obtenus nous avons établi le profil de densité qui varie suivant l'axe laser entre 10^22 et 10^23 cm-3. Une étude spécifique de la zone ultradense a montré que sur l'aile rouge de la raie F IX Ly-β apparaît un satellite dont la position spectrale est en bon accord avec la précédente théorie des molécules transitoires.

Download or read book tude exp rimentale du d placement de la raie Palpha de l h lium une fois ionis written by Patrick Le Gall and published by . This book was released on 1983 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: Etude du deplacement de la raie palpha (n=4->3, lambda =4685,7 a) de l'helium une fois ionise, pour laquelle la theorie classique de l'elargissement de raie ne prevoit pas de deplacement (approximation de quasi-degenerescence des niveaux stark)

Download or read book Quantum Mechanics Volume 3 written by Claude Cohen-Tannoudji and published by John Wiley & Sons. This book was released on 2019-12-16 with total page 790 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book ICREEC 2019 written by Ahmed Belasri and published by Springer Nature. This book was released on 2020-06-10 with total page 659 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights peer reviewed articles from the 1st International Conference on Renewable Energy and Energy Conversion, ICREEC 2019, held at Oran in Algeria. It presents recent advances, brings together researchers and professionals in the area and presents a platform to exchange ideas and establish opportunities for a sustainable future. Topics covered in this proceedings, but not limited to, are photovoltaic systems, bioenergy, laser and plasma technology, fluid and flow for energy, software for energy and impact of energy on the environment.

Download or read book Nonlinear Magnetohydrodynamics written by D. Biskamp and published by Cambridge University Press. This book was released on 1997-07-17 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: A self-contained introduction to magnetohydrodynamics with emphasis on nonlinear processes.

Download or read book The Theory of Ionization of Gases by Collision written by Sir John Townsend and published by . This book was released on 1910 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Molecular Hydrodynamics written by Jean Pierre Boon and published by Courier Corporation. This book was released on 1991-01-01 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt: A graduate level introduction to the theory and applications of time correlation functions and the molecular theory of fluid dynamics. "Quite well organized . . . the literature coverage is impressive." — Physics Today. 110 illustrations.

Download or read book Reviews of Plasma Physics written by M. Leontovich and published by Springer. This book was released on 1987-05-01 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Introduction to Plasma Physics and Controlled Fusion written by Francis F. Chen and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 427 pages. Available in PDF, EPUB and Kindle. Book excerpt: TO THE SECOND EDITION In the nine years since this book was first written, rapid progress has been made scientifically in nuclear fusion, space physics, and nonlinear plasma theory. At the same time, the energy shortage on the one hand and the exploration of Jupiter and Saturn on the other have increased the national awareness of the important applications of plasma physics to energy production and to the understanding of our space environment. In magnetic confinement fusion, this period has seen the attainment 13 of a Lawson number nTE of 2 x 10 cm -3 sec in the Alcator tokamaks at MIT; neutral-beam heating of the PL T tokamak at Princeton to KTi = 6. 5 keV; increase of average ß to 3%-5% in tokamaks at Oak Ridge and General Atomic; and the stabilization of mirror-confined plasmas at Livermore, together with injection of ion current to near field-reversal conditions in the 2XIIß device. Invention of the tandem mirror has given magnetic confinement a new and exciting dimension. New ideas have emerged, such as the compact torus, surface-field devices, and the EßT mirror-torus hybrid, and some old ideas, such as the stellarator and the reversed-field pinch, have been revived. Radiofrequency heat ing has become a new star with its promise of dc current drive. Perhaps most importantly, great progress has been made in the understanding of the MHD behavior of toroidal plasmas: tearing modes, magnetic Vll Vlll islands, and disruptions.

Download or read book Our Changing Planet written by Fred T. Mackenzie and published by . This book was released on 2003 with total page 598 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers a general, interdisciplinary discussion of global environmental change oriented toward the non-specialist in science.The unifying theme of the book is consideration of aspects of both natural and human-induced global environmental change. The two part organization according to this distinction allows for easy reading on specific topics.This book is useful for anyone interested in learning more about Earth's systems.

Download or read book Index Theorem written by Mikio Furuta and published by . This book was released on 2007 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Crown Ethers and Cryptands written by George W Gokel and published by Royal Society of Chemistry. This book was released on 2016-11-08 with total page 205 pages. Available in PDF, EPUB and Kindle. Book excerpt: Crown Ethers and Cryptands introduces the broad and basic principles of crown ether and cryptand chemistry at the advanced undergraduate, graduate and working professional level. The book provides a brief introduction, outlining the history of the field and goes on to cover syntheses, complexation of cations and molecules, complex structures, applications and recent developments. It aims to acquaint readers with the scope and principles of the field, providing a bibliography of reviews and books as reference to further reading and citations of the original literature.

Download or read book An Introduction to Differential Manifolds written by Jacques Lafontaine and published by Springer. This book was released on 2015-07-29 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is an introduction to differential manifolds. It gives solid preliminaries for more advanced topics: Riemannian manifolds, differential topology, Lie theory. It presupposes little background: the reader is only expected to master basic differential calculus, and a little point-set topology. The book covers the main topics of differential geometry: manifolds, tangent space, vector fields, differential forms, Lie groups, and a few more sophisticated topics such as de Rham cohomology, degree theory and the Gauss-Bonnet theorem for surfaces. Its ambition is to give solid foundations. In particular, the introduction of “abstract” notions such as manifolds or differential forms is motivated via questions and examples from mathematics or theoretical physics. More than 150 exercises, some of them easy and classical, some others more sophisticated, will help the beginner as well as the more expert reader. Solutions are provided for most of them. The book should be of interest to various readers: undergraduate and graduate students for a first contact to differential manifolds, mathematicians from other fields and physicists who wish to acquire some feeling about this beautiful theory. The original French text Introduction aux variétés différentielles has been a best-seller in its category in France for many years. Jacques Lafontaine was successively assistant Professor at Paris Diderot University and Professor at the University of Montpellier, where he is presently emeritus. His main research interests are Riemannian and pseudo-Riemannian geometry, including some aspects of mathematical relativity. Besides his personal research articles, he was involved in several textbooks and research monographs.

Download or read book Sheep and Goat Production written by I. E. Coop and published by Elsevier Science & Technology. This book was released on 1982 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ecology and distribution; Breeding; Reproduction; Maintenance and growth; Pregnancy; Lactation of suckling ewes and does; Nutritional diseases; Infectious diseases of sheep and goats; Internal parasites of sheep and goats; External parasites of sheep and goats; Growth and characteristics of wool and hair; Wiik grading and marketing; Livestock and meat marketing and grading; Carcase and meat qualities; Milk production in sheep and goats; Systems, biological and economic efficiencies; Very extensive systems; Extensive grazing systems; Intensive grassland systems; Intensive arable systems; Very intensive systems; Government controlled systems; Migratory (Transhumance) systems; Nomadic systems; Village and smallholder systems; List of contributors.