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 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 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 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 Interaction of Gases with Surfaces written by Alexander V. Bogdanov and published by Springer Science & Business Media. This book was released on 2008-09-11 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interface phenomena are most fascinating because of the mixing of different scales and the interference of diverse physical processes. This makes it necessary to use different levels of description: microscopic, kinetic, and gas-dynamical. A unified quasiclassical approach is used to answer practical questions dealing with inelastic gas-surface scattering, the kinetics of adsorption layers, the evolution of inhomogeneities and defects at the surface, the Knudsen layer, the development of boundary conditions on the kinetic and gas-dynamical levels, the determination of exchange and slip coefficients, and so on.
Download or read book Fundamentals of Inelastic Electron Scattering written by P. Schattschneider and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 205 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electron energy loss spectroscopy (ELS) is a vast subject with a long and honorable history. The problem of stopping power for high energy particles interested the earliest pioneers of quantum mechanics such as Bohr and Bethe, who laid the theoretical foun dations of the subject. The experimental origins might perhaps be traced to the original Franck-Hertz experiment. The modern field includes topics as diverse as low energy reflection electron energy loss studies of surface vibrational modes, the spectroscopy of gases and the modern theory of plasmon excitation in crystals. For the study of ELS in electron microscopy, several historically distinct areas of physics are relevant, including the theory of the Debye Waller factor for virtual inelastic scattering, the use of complex optical potentials, lattice dynamics for crystalline specimens and the theory of atomic ionisation for isolated atoms. However the field of electron energy loss spectroscopy contains few useful texts which can be recommended for students. With the recent appearance of Raether's and Egerton's hooks (see text for references), we have for the first time both a comprehensive review text-due to Raether-and a lucid introductory text which emphasizes experimental aspects-due to Egerton. Raether's text tends to emphasize the recent work on surface plasmons, while the strength of Egerton's book is its treatment of inner shell excitations for microanalysis, based on the use of atomic wavefunctions for crystal electrons.
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 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 Inelastic and Reactive Gas surface Collisions written by Laura Ann Smoliar and published by . This book was released on 1995 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Interaction of Gases with Surfaces written by Alexander V. Bogdanov and published by Springer Science & Business Media. This book was released on 1995-03-22 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interface phenomena are most fascinating because of the mixing of different scales and the interference of diverse physical processes. This makes it necessary to use different levels of description: microscopic, kinetic, and gas-dynamical. A unified quasiclassical approach is used to answer practical questions dealing with inelastic gas-surface scattering, the kinetics of adsorption layers, the evolution of inhomogeneities and defects at the surface, the Knudsen layer, the development of boundary conditions on the kinetic and gas-dynamical levels, the determination of exchange and slip coefficients, and so on.
Download or read book Dynamics of Gas surface Scattering written by Frank O. Goodman and published by New York : Academic Press. This book was released on 1976 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dynamics of Gas-Surface Scattering ...
Download or read book Gas Surface Reactions written by Richard N. Zare and published by . This book was released on 1987 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: Studies were conducted on the fundamental gas-surface scattering processes. Significant advances were made in understanding inelastic scattering processes when a diatomic molecule strikes a well-defined single-crystal surface in an ultra high vacuum environment or when atoms permeate through a metal and recombinatively desorb.
Download or read book Molecular Beam Studies of Infrared Multiphoton Dissociation and Inelastic Gas surface Scattering written by Cindy Linea Berrie and published by . This book was released on 1997 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:
