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Etude Quantique Des Echanges Denergie Entre Un Proton Et Les Phonons Dune Surface Datomes Lourds
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Book Synopsis Etude quantique des échanges d'énergie entre un proton et les phonons d'une surface d'atomes lourds by : Frédéric Filliette
Download or read book Etude quantique des échanges d'énergie entre un proton et les phonons d'une surface d'atomes lourds written by Frédéric Filliette and published by . This book was released on 2000 with total page 117 pages. Available in PDF, EPUB and Kindle. Book excerpt: NOUS AVONS ETUDIE LES TRANSFERTS D'ENERGIE ENTRE UN PROTON ET LES PHONONS D'UNE SURFACE D'ATOMES LOURDS D'UNE MANIERE QUANTIQUE. POUR CECI, NOUS NOUS SOMMES BASES SUR LA DIFFERENCE DE MASSE ENTRE LE PROTON ET LES ATOMES DE LA SURFACE, AFIN DE POUVOIR FAIRE UNE ANALOGIE ENTRE CE PROTON ET LES ELECTRONS DE SURFACE. NOUS AVONS ALORS CONSTRUIT DEUX MODELES, UTILISANT L'APPROXIMATION DE BORN-OPPENHEIMER ET L'APPROXIMATION HARMONIQUE, AFIN DE POUVOIR DECRIRE LES INTERACTIONS ENTRE UN PROTON ET LES MOUVEMENTS DES ATOMES LOURDS DE LA SURFACE. DANS CE TRAVAIL, NOUS PRESENTONS L'ETUDE THEORIQUE DE L'ECHANGE D'ENERGIE ENTRE UN PROTON ET LES PHONONS D'UNE SURFACE (100) DU PLATINE. DANS UN PREMIER TEMPS NOUS ALLONS PRESENTER LES MODELES UTILISES, DANS CETTE ETUDE, POUR REPRESENTER LE PROTON, LES PHONONS ET LES COUPLAGES ENTRE CEUX-CI. DANS UN DEUXIEME TEMPS NOUS DEVELOPPERONS LES TERMES CORRESPONDANTS AUX ECHANGES D'ENERGIE ENTRE LE PROTON ET LES PHONONS, AFIN DE METTRE EN EVIDENCE LES DIFFERENTS TYPES D'ECHANGES POSSIBLES. ENFIN, NOUS PRESENTERONS LES RESULTATS CORRESPONDANT A CES DIFFERENTS TYPES D'ECHANGE D'ENERGIE ENTRE LE PROTON ET LES PHONONS.
Book Synopsis X-Ray and Neutron Reflectivity: Principles and Applications by : Jean Daillant
Download or read book X-Ray and Neutron Reflectivity: Principles and Applications written by Jean Daillant and published by Springer Science & Business Media. This book was released on 2003-07-01 with total page 347 pages. Available in PDF, EPUB and Kindle. Book excerpt: The reflection of and neutrons from surfaces has existed as an x-rays exp- imental for almost it is in the last technique fifty Nevertheless, only years. decade that these methods have become as of enormously popular probes This the surfaces and interfaces. to be due to of several appears convergence of intense different circumstances. These include the more n- availability be measured orders tron and sources that can over (so reflectivity x-ray many of and the much weaker surface diffuse can now also be magnitude scattering of thin films and studied in some the detail); growing importance multil- basic the realization of the ers in both and technology research; important which in the of surfaces and and role roughness plays properties interfaces; the of statistical models to characterize the of finally development topology its and its characterization from on roughness, dependence growth processes The of and to surface scattering experiments. ability x-rays neutro4s study four five orders of in scale of surfaces over to magnitude length regardless their and also their to ability probe environment, temperature, pressure, etc. , makes these the choice for buried interfaces often probes preferred obtaining information about the microstructure of often in statistical a global surfaces, the local This is manner to complementary imaging microscopy techniques, of such studies in the literature witnessed the veritable by explosion published the last few Thus these lectures will useful for over a resource years.
