Download or read book Dynamics of Gas Surface Scattering written by Frank O. Goodman and published by Elsevier. This book was released on 2012-12-02 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dynamics of Gas-Surface Scattering deals with the dynamics of scattering as inferred from known properties of gases and solids. This book discusses measurements of spatial distributions of scattered atomic and molecular streams, and of the energy and momentum which gas particles exchange at solid surfaces. It also considers two regimes of scattering, both of which are associated with a lower range of incident gas energies: the thermal and structure scattering regimes. Comprised of 10 chapters, this book opens with a brief historical overview of the early experiments that investigated the dynamics of scattering of gases by surfaces. The discussion then turns to some elements of the kinetic theory of gases; intermodular potentials and interaction regimes; and classical-mechanical lattice models used in gas-surface scattering theory. The applications of molecular beams to the study of gas-surface scattering phenomena are also described. The remaining chapters focus on experiments and theories on scattering of molecular streams by surfaces of solids, with emphasis on thermal and structure regimes of inelastic scattering; quantum theory of gas-surface scattering; and quantum mechanical scattering phenomena. This text concludes with an analysis of energy exchange processes that may occur when a solid surface is completely immersed in a still gas. This monograph will be a valuable resource for students and practitioners of physics, chemistry, and applied mathematics.
Download or read book Dynamics of Gas Surface Interactions written by Ricardo Diez Muino and published by Springer Science & Business Media. This book was released on 2013-02-26 with total page 439 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gives a representative survey of the state of the art of research on gas-surface interactions. It provides an overview of the current understanding of gas surface dynamics and, in particular, of the reactive and non-reactive processes of atoms and small molecules at surfaces. Leading scientists in the field, both from the theoretical and the experimental sides, write in this book about their most recent advances. Surface science grew as an interdisciplinary research area over the last decades, mostly because of new experimental technologies (ultra-high vacuum, for instance), as well as because of a novel paradigm, the ‘surface science’ approach. The book describes the second transformation which is now taking place pushed by the availability of powerful quantum-mechanical theoretical methods implemented numerically. In the book, experiment and theory progress hand in hand with an unprecedented degree of accuracy and control. The book presents how modern surface science targets the atomic-level understanding of physical and chemical processes at surfaces, with particular emphasis on dynamical aspects. This book is a reference in the field.
Download or read book Dynamics Of Gas surface Scattering written by F.O. Goodman and published by . This book was released on with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Classical Dynamics of Gas surface Scattering written by Alberto Rodriguez-Fernandez and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Probing the Dynamics of Gas surface Interactions with Rotationally Inelastic Scattering written by Thomas Frost Hanisco and published by . This book was released on 1993 with total page 714 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dynamics of Gas Surface Interaction written by Giorgio Benedek and published by . This book was released on 2014-01-15 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Inelastic Scattering in Gas surface Dynamics written by Gary Anthony Gates and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book DYNAMICS OF DISSOCIATIVE GAS SURFACE SCATTERING AT HYPERTHERMAL ENERGIES 1 10eV written by Eliezer Kolodney and published by . This book was released on 1985 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dynamics of Gas Surface Interactions written by and published by . This book was released on 1996 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt: A wide variety of gas-surface-and electron-surface scattering experiments, supported by lattice dynamics, molecular dynamics, and scattering calculations were carried out under the auspices of this grant. These studies were motivated by a desire to understand and control surface reactions, such as surface oxidation, the technological need to characterize the physical properties of thin films and surfaces, and the desire to understand how energy and momentum are exchanged at an interface subjected to gas-surface or electron-surface collisions. Experiments involved clean, alloyed, oxidized, and stepped metallic interfaces. Surface phonon dispersion relations, and hence surface forcefields, for clean and adsorbate covered systems were determined using inelastic atom and electron scattering, providing a microscopic basis for assessing structural stability at interfaces. Major advances occurred in our understanding of the forces which are present at atomic-level steps, as well as in the area of metallic oxidation, including oxide nucleation. Synergistic effects involving electrons were shown to significantly modify metallic oxidation kinetics. Other projects dealt with alloy surface structure and stability, adsorbate negative ion resonances, dipole interactions of adsorbates, spectroscopy of frustrated low energy adsorbate vibrational modes, molecular dynamics simulations of surface vibrational dynamics, and anharmonicity in surface potentials. p1.
Download or read book Dynamics of Gas Surface Interaction written by Giorgio Benedek and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 295 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent decades surface science has experienced a large growth in connection with the development of various experimental techniques which are able to characterize solid surfaces through the observation of the scattering of ions, electrons, photons or atoms. These methods of investigation, known under different labels such as LEED, AES, XPS, UPS, etc. have been extensively applied in describing the structure, morphology, and chemical and physical properties of crystal surfaces and interfaces of a large variety of materials of interest in solid-state physics, electronics, metallurgy, biophysics, and heterogeneous catalysis. Among these methods we wish to emphasize molecular beam scattering from solid surfaces. ~lolecular beam scattering has gone through a large development in the last ten years. In this decade a large number of laboratories have used this method to study various clean and adsorbate-covered surfaces. The technique is nonetheless quite old. It dates back to the beginning of the thirties, when Estermann and Stern performed the first atom diffraction experiment proving the wave nature of atoms. In the following years the entire subject of gas-surface interaction was considered a branch of rarefied gas dynamics and developed in connection with aerospace research. Attention was then given to the integral properties of gas-solid interactions (sticking and energy accomodation, mean momentum transfer) rather than to atom-surface scatter ing from well-characterized surfaces.
Download or read book The Dynamics of Gas Surface Interactions Probed by Molecular Beam Scattering from Organized Monolayers of Organic Amphiphiles written by Sidney R. Cohen and published by . This book was released on 1987 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Multiple Scattering Approach to Gas surface Collision Dynamics written by Hansong Cheng and published by . This book was released on 1992 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Manifestation en l honneur de M Eug ne Catalan Professeur m rite la Facult des sciences de l Universit de Li ge ancien r p titeur l Ecole Polytechnique de Paris 7 D cembre 1884 written by Eugène Catalan and published by . This book was released on 1885 with total page 53 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Inelastic Scattering and Recombinative Desorption Dynamics of Selected Gas surface Systems written by Glenn Douglas Kubiak and published by . This book was released on 1984 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dynamics of Gas surface Reactions on A1 111 and Si 100 written by Monica Louise Neuburger and published by . This book was released on 2002 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: Both experiments and computational methods were employed to study reaction dynamics at gas-solid interfaces. The recombinative desorption of hydrogen from Si(100) was studied through experiments using a custom-built ultrahigh vacuum molecular beam surface scattering apparatus while computational methods were employed to investigate the dissociative chemisorption of oxygen on Al(111). The desorption of H2 from Si(100) is an important reaction in the microelectronics industry as silane and disilane are common precursors in the chemical vapor deposition of thin silicon films. Since hydrogen atoms from these precursors passivate the surface to further film growth, films are commonly grown at high temperature to force the desorption of hydrogen; however, this allows for interdiffusion of atoms at heterojunctions. Hydrogen desorption is the rate limiting step to film growth at low temperatures. The first project in the study of this reaction was to investigate the ability of a supersonic molecular beam to remove H2 from Si(100) at low temperatures. Collisions between the beam and the hydrogen-covered surface transfer enough energy to adsorbed hydrogen atoms to induce desorption. In separate experiments, we gained insight into the nature of the transition state of hydrogen desorption from Si(100) by studying the angular distribution of thermally desorbing D2 molecules. A doubly differentially-pumped mass spectrometer was used as a line-of-sight detector to record angularly resolved thermal desorption spectra over a wide range of angles. We observed different distributions for the monodeuteride and dideuteride phases indicating that the transition state to desorption for these phases is different. The dissociative chemisorption of O2 on Al(111) was once thought to be a model system for metal oxidation. In the conventional view of dissociative chemisorption, the adsorbed oxygen atoms are expected to reside at neighboring sites. Experimental observations of widely spaced oxygen adatoms indicates that the reaction follows an unconventional pathway. We used Monte Carlo simulations to model this reaction using atom abstraction, in which only one atom from the molecule adsorbs on the surface, as the only operative mechanism. Our simulations show that the experimental observations can be explained with atom abstraction if two modifications are made to the basic atom abstraction mechanism.
Download or read book Fundamentals of Gas Surface Interactions written by Howard Saltsburg and published by Elsevier. This book was released on 2013-10-22 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fundamentals of Gas–Surface Interactions presents the study of the surface itself and the study of the gas phase partner of the interaction in which physical or chemical transformation of the gas resulted from that interaction. This book discusses the study of the energy and momentum exchanges resulting from the gas–solid physical interaction in which either gas or solid phase properties can be measured. Organized into three parts encompassing 33 chapters, this book begins with an overview of the different sensitive physical methods for the study of surface topography, surface defects, and surface irregularities to an accuracy of a few Angstroms. This text then reviews the adsorption at very low coverage that has yielded to equilibrium analysis. Other chapters consider the measurement of surface area by adsorption and optical techniques. The final chapter deals with scattering processes including momentum and energy transfer. This book is a valuable resource for engineers.
Download or read book Gas Solid Dynamics at Disordered and Adsorbate Covered Surfaces written by Herschel Rabitz and published by . This book was released on 1987 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: The research under this grant was aimed at several closely related objectives involving studies in chemical dynamics and chemical kinetics. In the case of chemical dynamics, both gas-phase and gas-surface molecular collisions were studied with a special emphasis on the development and application of new techniques. In particular, an average wavefunction procedure was developed especially designed for treating the scattering from complex targets. Applications were made to gas-phase scattering as well as gas-surface scattering in the presence of defects. In the latter case, the focus was on the role that natural defects or adsorbed species have with regard to their influence on the chemical and physical properties of surfaces. Keywords: Chemical dynamics; Chemical kinetics; Gas surface; Wavefunction.
