Inelastic Gas Surface Scattering
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Author | : Mark D. Stiles |
Publisher | : |
Total Pages | : 58 |
Release | : 1982 |
Genre | : |
ISBN | : |
Download Inelastic Gas-Surface Scattering. I. Formalism Book in PDF, Epub and Kindle
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.
Author | : Frank O. Goodman |
Publisher | : Elsevier |
Total Pages | : 352 |
Release | : 2012-12-02 |
Genre | : Science |
ISBN | : 0323154611 |
Download Dynamics of Gas-Surface Scattering Book in PDF, Epub and Kindle
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.
Author | : Mark D. Stiles |
Publisher | : |
Total Pages | : 118 |
Release | : 1986 |
Genre | : |
ISBN | : |
Download Inelastic Gas-Surface Scattering. II. Results Book in PDF, Epub and Kindle
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.
Author | : Mark David Stiles |
Publisher | : |
Total Pages | : 564 |
Release | : 1986 |
Genre | : Copper |
ISBN | : |
Download Inelastic Gas-surface Scattering Book in PDF, Epub and Kindle
Author | : J. E Hurst (Jr) |
Publisher | : |
Total Pages | : 6 |
Release | : 1982 |
Genre | : |
ISBN | : |
Download Statistical Averaging in Rotationally Inelastic Gas-Surface Scattering: The Role of Surface Atom Motion Book in PDF, Epub and Kindle
Author | : Gary Anthony Gates |
Publisher | : |
Total Pages | : |
Release | : 1994 |
Genre | : |
ISBN | : |
Download Inelastic Scattering in Gas-surface Dynamics Book in PDF, Epub and Kindle
Author | : Alexander V. Bogdanov |
Publisher | : Springer Science & Business Media |
Total Pages | : 140 |
Release | : 2008-09-11 |
Genre | : Science |
ISBN | : 3540491074 |
Download Interaction of Gases with Surfaces Book in PDF, Epub and Kindle
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.
Author | : P. Schattschneider |
Publisher | : Springer Science & Business Media |
Total Pages | : 205 |
Release | : 2012-12-06 |
Genre | : Technology & Engineering |
ISBN | : 3709188660 |
Download Fundamentals of Inelastic Electron Scattering Book in PDF, Epub and Kindle
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.
Author | : Eugène Catalan |
Publisher | : |
Total Pages | : 53 |
Release | : 1885 |
Genre | : |
ISBN | : |
Download Manifestation en l'honneur de M. Eugène Catalan, Professeur émérite à la Faculté des sciences de l'Université de Liège ancien répétiteur à l'Ecole Polytechnique de Paris 7 Décembre 1884 Book in PDF, Epub and Kindle
Author | : Glenn Douglas Kubiak |
Publisher | : |
Total Pages | : 502 |
Release | : 1984 |
Genre | : |
ISBN | : |
Download Inelastic Scattering and Recombinative Desorption Dynamics of Selected Gas/surface Systems Book in PDF, Epub and Kindle