Download or read book Inelastic Gas Surface Scattering II Results written by Mark D. Stiles and published by . This book was released on 1986 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: Helium and molecular hydrogen scattering from copper is calculated to examine general features of scattering for these systems, especially the quantum mechanics of the scattering process, both for the motion of the particle and the excitations of the lattice. These calculations use an interaction potential chosen to simplify the numerical calculation while retaining the essential physics of the interaction. The scattering calculations show that these approximations quantitatively reproduce experimental results. The scattering probabilities are shown to depend on details of the system like the well depth and the steepness of the potential and assumptions are made to simplify the interaction potential. H2 and D2 inelastic scattering and trapping probabilities show strong enhancement by selecti adsorption resonances and overall changes in scattering intensities due to other more subtle effects of the rotational degrees of freedom. Temperature dependent HD scattering probabilities show the effect of inelastic scattering on rotationally inelastic scattering and selective adsorption resonances.
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 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 Inelastic Gas Surface Scattering I Formalism written by Mark D. Stiles and published by . This book was released on 1982 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: A method is presented for calculating elastic and inelastic scattering probabilities for light particles, such as helium and molecular hydrogen, scattering from surfaces with which they weakly interact. The method is a unitary one-phonon approximation in which the scattering probabilities are calculated from thermally averages amplitudes which are generated numerically. The thermal averaging procedure is more general than this application and could be applied to other systems with weak inelastic scattering. An approximation for the gas surface interaction potential is discussed that can greatly simplify calculations where it is applicable. Finally some preliminary results are presented using this method to study rotationally mediated selective adsorption resonances in HD scattering from copper.
Download or read book Inelastic Gas surface Scattering written by Mark David Stiles and published by . This book was released on 1986 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Statistical Averaging in Rotationally Inelastic Gas Surface Scattering The Role of Surface Atom Motion written by J. E Hurst (Jr) and published by . This book was released on 1982 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dynamics on Surfaces written by A. Pullman and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 477 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the Seventeenth Jerusalem Symposium on Quantum Chemistry and Biochemistry, Jerusalem, Israel, April 30-May 3, 1984
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Download or read book Physics Briefs written by and published by . This book was released on 1990 with total page 816 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 Heterogeneous Reaction Dynamics written by S. Bernasek and published by John Wiley & Sons. This book was released on 1995-10-12 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is an in-depth monograph covering the topic of energy transfer and reactions on solid surfaces. This topic is of great interest now because of its applications to catalysis and solid-state electronics, including the manufacture of semiconductors, integrated circuits and other solid state devices. Initially it describes what is meant by heterogenous reaction dynamics. Basically, this is the study, on a molecular level, of the elementary dynamics of energy transfer and reactions at surface. The emphasis of the book will be on well characterized solid surfaces. Energy transfer and reactions are broadly defined to include phase transitions in adsorbed layers, diffusion, the absorption process itself, and energy transfer between adsorbate and subtrate, as well as gas-surface energy transfer, catalytic and oxidative type surface reactions.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1989 with total page 780 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Horizons in World Physics written by Albert Reimer and published by Nova Publishers. This book was released on 2004 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents leading-edge research in physics from researchers around the world. Contents: Preface; Interface-Localised Mode in Bilayer Film Ferromagnetic Resonance Spectrum; On Similarity Waves in Compacting Media; Generalised Relativistic Dynamics of Charged Particle; Deviatoric Elasticity as a Mechanism describing Stable Shapes of Nanotubes; A Thermodynamic Approach for Predicting Micelle and Asphaltene-Micelle Formation; Asymptotic Theories for the Non-linear Analysis of Axisymmetric Laminated Cylindrical Shells; Statistical Dynamics of Energy Transfer in Direct Inelastic Gas-Surface Scattering within Dynamical Lie Algebraic Method; Topologically Charged Vortex in a Supersymmetric Kalb-Ramond Theory; The Effect of Fibre Curvature on Suspension Viscosity; Measurements of Reaction Cross-Sections and Determination of Nucleon Matter Density Distributions; Index.
Download or read book Inelastic Scattering of N2 from Si 100 written by Andrew David Hutchison and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gas-surface scattering of N2 from Si(100) is characterized between 290 K and 1200 K at several incident kinetic energies using REMPI spectroscopy. The N2/Si(100) system should exhibit strong single-collision energy exchange between N2 molecules and individual Si surface atoms. This scattering regime is difficult to treat in gas-surface interaction models, so it is not well understood what behavior should be expected. Scattered translational, rotational, and vibrational excitation are quantified. We confirm a previous assessment that trapping appears to be weak for surface temperatures above 300 K. The therefore-direct rotational and translational scattering kinetics exhibit surprising scaling with surface temperature and incident energy, scaling which is qualitatively different from the single-crystal metal targets typically used in similar molecular beam scattering experiments. It seems that N2 is coupling to surface degrees of freedom in a highly structured way. Determining the exact nature of this coupling will require additional measurements, particularly to assess surface parallel momentum transfer, which the data in this work is not able to estimate. Two scaling changes near the known metal-insulator transition at 850 K, suggest that inelastic N2 scattering may have some use as a surface structure probe. No vibrationally excited N2 was observed in surface scattering. However, based on the precision of this zero signal, the probability of scattering into v=1 is assigned an upper bound of 0.4%. This is sufficient to establish that significantly less energy couples into vibration than into rotation
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1976-06 with total page 1216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Theoretical Surface Science written by Axel Groß and published by Springer Science & Business Media. This book was released on 2009-09-16 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: Progress continues in the theoretical treatment of surfaces and processes on surfaces based on first-principles methods, i.e. without invoking any empirical parameters. In this book, the theoretical concepts and computational tools necessary and relevant for a microscopic approach to the theoretical description of surface science is presented, together with a detailed discussion of surface phenomena. This makes the book suitable for both graduate students and for experimentalists seeking an overview of the theoretical concepts in surface science. This second enlarged edition has been carefully revised and updated, a new chapter on surface magnetism is included, and novel developments in theoretical surface science are addressed.
Download or read book Springer Handbook of Surface Science written by Mario Rocca and published by Springer Nature. This book was released on 2021-01-14 with total page 1273 pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook delivers an up-to-date, comprehensive and authoritative coverage of the broad field of surface science, encompassing a range of important materials such metals, semiconductors, insulators, ultrathin films and supported nanoobjects. Over 100 experts from all branches of experiment and theory review in 39 chapters all major aspects of solid-state surfaces, from basic principles to applications, including the latest, ground-breaking research results. Beginning with the fundamental background of kinetics and thermodynamics at surfaces, the handbook leads the reader through the basics of crystallographic structures and electronic properties, to the advanced topics at the forefront of current research. These include but are not limited to novel applications in nanoelectronics, nanomechanical devices, plasmonics, carbon films, catalysis, and biology. The handbook is an ideal reference guide and instructional aid for a wide range of physicists, chemists, materials scientists and engineers active throughout academic and industrial research.
