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Transitions De Structure Fine Des Alcalins Induites Par Collision Sur Des Atomes De Gaz Rares Ou Des Molecules
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Book Synopsis Transitions de structure fine des alcalins induites par collision sur des atomes de gaz rares ou des molécules by : Jean-Michel Mestdagh (auteur d'une thèse de sciences.)
Download or read book Transitions de structure fine des alcalins induites par collision sur des atomes de gaz rares ou des molécules written by Jean-Michel Mestdagh (auteur d'une thèse de sciences.) and published by . This book was released on 1982 with total page 349 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Etude théorique des collisions non réactives entre atomes alcalins et molécules d'hydrogène ou de deuterium by : François-Noël Rossi
Download or read book Etude théorique des collisions non réactives entre atomes alcalins et molécules d'hydrogène ou de deuterium written by François-Noël Rossi and published by . This book was released on 1986 with total page 197 pages. Available in PDF, EPUB and Kindle. Book excerpt: Calcul des courbes de potentiel adiabatiques pour les géométries colinéaires et perpendiculaires, à l'aide d'un pseudopotentiel dépendant du moment orbital électronique et d'une approche à deux centres; bon accord avec les calculs ab initio existants. Examen des différentes symétries de ces systèmes dans le formalisme de la théorie des groupes, afin d'étudier les valeurs propres et facteurs propres de l'hamiltonien électronique. Calcul quantique des sections efficaces relatives des transitions de structure fine de Rb induites par collision avec H(2) ou D(2). en tenant compte des niveaux rotationnels moléculaires, obtention d'un très bon accord avec les résultats expérimentaux et interprétation de l'effet isotopique
Book Synopsis TRANSITIONS RADIATIVES INDUITES PAR COLLISION DANS LES SYSTEMES ALCALIN-GAZ RARE by : J. P.. VISTICOT
Download or read book TRANSITIONS RADIATIVES INDUITES PAR COLLISION DANS LES SYSTEMES ALCALIN-GAZ RARE written by J. P.. VISTICOT and published by . This book was released on 1978 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: COMPARAISON DES PROFILS, CALCULES ET OBSERVES, ASSOCIES A DES TRANSITIONS INTERDITES DES ALCALINS PERTURBES PAR DES ATOMES DE GAZ RARE, LES PROFILS CALCULES ETANT OBTENUS A PARTIR DE LA THEORIE QUASI STATIQUE ET DES DONNEES RELATIVES AUX COURBES DE POTENTIEL D'INTERACTION ET AUX FORCES D'OSCILLATEUR. ETUDE DETAILLEE DES BANDES ASSOCIEES AUX TRANSITIONS 6S-7S ET 6S-5D DE CS EN PRESENCE DE HE.
Book Synopsis Transitions de structure fine par collisions atome-atome et ion-atome by : Françoise Masnou-Seeuws
Download or read book Transitions de structure fine par collisions atome-atome et ion-atome written by Françoise Masnou-Seeuws and published by . This book was released on 1973 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Etude générale de la collision atome-atome lorsque le couplage spin-orbite n'est pas négligeable, et à l’application au système sodium-hélium: hypothèses sur la trajectoire et le potentiel, résolution du système d'équations couplées. L'interaction prédominante entre les deux atomes est l'interaction répulsive a moyenne portée. Explication du mécanisme de collision lorsque varie la distance entre atomes. Généralisation de l'étude a l'excitation de transitions de structure fine d'ions positifs de configuration p (FeXIV) et p2(NII, OIII, SiIX, FeXIII) par impact protonique.
Book Synopsis CIAMDA 80 by : International Atomic Energy Agency
Download or read book CIAMDA 80 written by International Atomic Energy Agency and published by . This book was released on 1980 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fine Structure Transitions in the First Excited State of Alkali Atoms by Collisions with Noble Gas Atoms by : Martin Bonifacio Hidalgo
Download or read book Fine Structure Transitions in the First Excited State of Alkali Atoms by Collisions with Noble Gas Atoms written by Martin Bonifacio Hidalgo and published by . This book was released on 1971 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis (E,2E) EXPERIMENTS ON RARE GAZ, DIATOMIC MOLECULES AND SURFACES by : STEPHANE.. RIOUAL
Download or read book (E,2E) EXPERIMENTS ON RARE GAZ, DIATOMIC MOLECULES AND SURFACES written by STEPHANE.. RIOUAL and published by . This book was released on 1997 with total page 115 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'IONISATION PAR IMPACT ELECTRONIQUE DES ATOMES DE NEON ET D'ARGON AINSI QUE DES MOLECULES DIATOMIQUE D'AZOTE ET DE MONOXYDE DE CARBONE A ETE ETUDIE PAR LA TECHNIQUE (E,2E). EN PARTICULIER, LES SECTIONS EFFICACES TRIPLEMENT DIFFERENTIELLES D'IONISATION ONT ETE MESUREES EN GEOMETRIE COPLANAIRE SYMETRIQUE ET A #A#B CONSTANT, UN PARTAGE EGAL DE L'ENERGIE ENTRE LES DEUX ELECTRONS LIBRES DANS L'ETAT FINAL ETANT RESPECTE. CECI EST EFFECTUE ENTRE 50 ET 500 EV DANS UNE VASTE REGION ANGULAIRE. APRES AVOIR PRESENTE LE MODELE THEORIQUE IMPULSIONNEL A ONDES PLANES (PWIA) AINSI QUE CELUI DE BORN A ONDES DEFORMEES (DWBA), LE DISPOSITIF EXPERIMENTAL PERMETTANT DE DETECTER EN COINCIDENCE LES DEUX ELECTRONS LIBRES ISSUS DE LA COLLISION IONISANTE EST DECRIT. LA COMPARAISON ENTRE NOS MESURES SUR LE NEON ET L'ARGON ET LES CALCULS DWBA PERMET DE METTRE EN EVIDENCE LES EFFETS DES DIVERSES INTERACTIONS MISE EN JEU LORS DE LA COLLISION. A HAUTE ET MOYENNE ENERGIE, LES CALCULS REPRODUISENT CORRECTEMENT L'EXPERIENCE. EN DESSOUS DE 100 EV, L'INCLUSION DES EFFETS POST-COLLISIONNEL ET DE POLARISATION DANS LE MODELE DWBA PERMET D'AMELIORER L'ACCORD ENTRE LA THEORIE ET L'EXPERIENCE, CEPENDANT D'IMPORTANTS DESACCORDS SUBSISTENT. LES MESURES SUR LES MOLECULES NE SONT PAS CORRECTEMENT REPRODUITES PAR LE MODELE PWIA A 400 EV EN GEOMETRIE COPLANAIRE SYMETRIQUE. A PLUS BASSE ENERGIE, AUCUN MODELE THEORIQUE N'EXISTE ET NOS RESULTATS SONT UNIQUEMENT COMPARES A CEUX OBTENUS SUR LES ATOMES. PEU DE DIFFERENCE SONT OBSERVEES ENTRE LES SECTIONS EFFICACE DES DEUX MOLECULES ISOELECTRONIQUE N#2 ET CO. DANS UN DERNIER CHAPITRE, NOUS MONTRONS LA FAISABILITE D'UNE EXPERIENCE DE COINCIDENCE (E,2E) SUR SURFACE ; EN PARTICULIER NOS MESURES PERMETTENT DE RECONSTRUIRE LA STRUCTURE DE BANDES DU GRAPHITE HOPG (HIGHLY-ORIENTED PYROLYTIC GRAPHITE).
Book Synopsis CONTRIBUTION A L'ETUDE DES TRANSITIONS INTERSYSTEMES INDUITES PAR COLLISIONS DANS LES PETITES MOLECULES by : Michel Lavollée
Download or read book CONTRIBUTION A L'ETUDE DES TRANSITIONS INTERSYSTEMES INDUITES PAR COLLISIONS DANS LES PETITES MOLECULES written by Michel Lavollée and published by . This book was released on 1980 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: ETUDE DES ECHANGES D'ENERGIE ENTRE ETATS SINGULETS ET TRIPLETS EN PRESENCE DE COLLISION, MALGRE LEUR INTERDICTION APPARENTE PAR LES REGLES DE CONSERVATION DE SPIN, SOUS L'EFFET COMBINE DU COUPLAGE SPIN-ORBITE INTRAMOLECULAIRE ET DE LA RELAXATION COLLISIONNELLE DES COHERENCES SINGULET-TRIPLET. ETUDE EXPERIMENTALE POUR UN GRAND NOMBRE DE NIVEAUX VIBRONIQUES DE L'ETAT A**(1)PI DE CO EN FONCTION DE LA PRESSION ET DE LA NATURE DU PARTENAIRE DE COLLISION (HE, AR, KR, NE, H::(2), D::(2), N::(2)). PROPOSITION D'UN MODELE CINETIQUE SIMPLE
Book Synopsis Etude théorique de processus dynamiques à deux atomes by : Thierry Duhoo
Download or read book Etude théorique de processus dynamiques à deux atomes written by Thierry Duhoo and published by . This book was released on 1994 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ce travail presente deux etudes theoriques dans le domaine de la dynamique moleculaire a deux atomes. La premiere etude concerne les effets d'alignement lors du transfert avec changement de spin (4s5p #1p4s5p #3p) dans l'atome ca par collision avec un atome he. Ces effets ont ete mis en evidence recemment dans des experiences de jets croises mettant en jeu deux lasers polarises rectilignement, l'un pour aligner initialement l'atome dans l'etat #1p l'autre pour sonder l'alignement final dans l'etat #3p. Tous les effets d'alignement peuvent etre caracterises par un jeu de sections efficaces exprimees dans un referentiel fixe de l'espace, le referentiel de collision. Par une approche quantique independante du temps, nous avons determine les sections efficaces de transfert dans le referentiel de collison pour trois jeux de potentiels des etats electroniques du systeme ca-he. Les resultats sont compares aux resultats experimentaux. La deuxieme etude est consacree a la dynamique de la dissociation de hc1 apres la photoexcitation de la molecule dans l'etat electronique repulsif a#1ii. La photodissociation de la molecule laisse les fragments dans leur etat electronique le plus bas en energie h(#2s) et c1(#2p). Notre etude est basee sur la theorie independante du temps de la photodissociation de molecules diatomiques. Nous avons determine la section efficace totale de photodissociation et les sections efficaces partielles de production de l'atome c1 dans l'une ou l'autre des deux composantes de structure fine (#2p#1#/#2 et #2p#3#/#2). Pour interpreter nos resultats et pour comprendre les mecanismes susceptibles d'affecter les populations dans les deux composantes #2p#1#/#2 et #2p#3#/#2 nous presentons, d'une part un calcul de redistribution du flux quantique dans les etats adiabatiques en fonction de la distance entre les deux atomes et d'autre part la determination, dans une approche semi-classique de l'evolution temporelle des probabilites de transition dans la base des etats adiabatiques.
Book Synopsis Quantum Mechanics, Volume 3 by : Claude Cohen-Tannoudji
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 Indium Seals written by R. O. Adams and published by . This book was released on 1964 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: The feasibility of using indium seals for large vacuum bell jars has been investigated. It is shown that such seals can be made; however, use of this type seal for repetitive operations is not recommended.
Book Synopsis Flexoelectricity in Liquid Crystals by : Agnes Buka
Download or read book Flexoelectricity in Liquid Crystals written by Agnes Buka and published by World Scientific. This book was released on 2013 with total page 299 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book intends to give a state-of-the-art overview of flexoelectricity, a linear physical coupling between mechanical (orientational) deformations and electric polarization, which is specific to systems with orientational order, such as liquid crystals. Chapters written by experts in the field shed light on theoretical as well as experimental aspects of research carried out since the discovery of flexoelectricity. Besides a common macroscopic (continuum) description the microscopic theory of flexoelectricity is also addressed. Electro-optic effects due to or modified by flexoelectricity as well as various (direct and indirect) measurement methods are discussed. Special emphasis is given to the role of flexoelectricity in pattern-forming instabilities. While the main focus of the book lies in flexoelectricity in nematic liquid crystals, peculiarities of other mesophases (bent-core systems, cholesterics, and smectics) are also reviewed. Flexoelectricity has relevance to biological (living) systems and can also offer possibilities for technical applications. The basics of these two interdisciplinary fields are also summarized.
Book Synopsis Radiocarbon After Four Decades by : Ervin Taylor
Download or read book Radiocarbon After Four Decades written by Ervin Taylor and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 611 pages. Available in PDF, EPUB and Kindle. Book excerpt: Radiocarbon After Four Decades: An Interdisciplinary Perspective commemorates the 40th anniversary of radiocarbon dating. The volume presents discussions of every aspect of this dating technique, as well as chronicles of its development and views of future advancements and applications. All of the 64 authors played major roles in establishment, development or application of this revolutionary scientific tool. The 35 chapters provide a solid foundation in the essential topics of radiocarbon dating: Historical Perspectives; The Natural Carbon Cycle; Instrumentation and Sample Preparation; Hydrology; Old World Archaeology; New World Archaeology; Earth Sciences; and Biomedical Applications.
Book Synopsis Nonlinear Optical Materials by : Jerome V. Moloney
Download or read book Nonlinear Optical Materials written by Jerome V. Moloney and published by Springer Science & Business Media. This book was released on 1998-08-13 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mathematical methods play a significant role in the rapidly growing field of nonlinear optical materials. This volume discusses a number of successful or promising contributions. The overall theme of this volume is twofold: (1) the challenges faced in computing and optimizing nonlinear optical material properties; and (2) the exploitation of these properties in important areas of application. These include the design of optical amplifiers and lasers, as well as novel optical switches. Research topics in this volume include how to exploit the magnetooptic effect, how to work with the nonlinear optical response of materials, how to predict laser-induced breakdown in efficient optical devices, and how to handle electron cloud distortion in femtosecond processes.
Book Synopsis Contact With Space: Oranur; Second Report 1951 - 1956 by : Wilhelm Reich
Download or read book Contact With Space: Oranur; Second Report 1951 - 1956 written by Wilhelm Reich and published by . This book was released on 2018-10-27 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wilhelm Reich's final publication, Contact With Space contains the result of six years of intensive research and field work: a natural scientific account of and the basis of practical measures for combating the DOR emergency. This volume is an exposition of the newest developments in the technology of Cosmic Orgone Engineering, which involve the use of "Spacegun," an extension of the cloudbuster made possible by the discovery of ORUR.During Reich's scientific expedition to southern Arizona (1954-1955)--which he documents in this book--it was Cosmic Orgone Engineering that caused desert land to turn green with prairie grass. Here Reich submits a natural scientific explanation of the metabolism of the Life Energy, a study which goes into the nature of primal vegetation, and the nature of dying or death of vegetation, i.e., desert development.Nature being one, Contact With Space examines the new basic energetic facts brought into the open by the Oranur Experiment in terms of the various branches of science into which they ramify: biophysics, Oranur medicine, astrophysics, meteorology, chemistry and pre-atomic chemistry, space technology, man's reactions to these events, etc. It also deals with the methods of the functional scientist.Written under unrelenting attack from conspiratorial commercial interests, this book gives some of the background into the difficult social and physical milieu in which this research was done, and conveys the excitement of the adventures that began the cosmic or "atomic" age.
Book Synopsis Application of Tracers in Arid Zone Hydrology by : Eilon M. Adar
Download or read book Application of Tracers in Arid Zone Hydrology written by Eilon M. Adar and published by . This book was released on 1995 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt:
