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Vibrational And Electronic Spectra Of Adsorbed Molecules By High Resolution Energy Loss Spectroscopy
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Book Synopsis Vibrational and Electronic Spectra of Adsorbed Molecules by High Resolution Energy Loss Spectroscopy by : John C. Hemminger
Download or read book Vibrational and Electronic Spectra of Adsorbed Molecules by High Resolution Energy Loss Spectroscopy written by John C. Hemminger and published by . This book was released on 1988 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper involved the use of the experimental techniques thermal desorption spectroscopy (TDS), high resolution electron energy loss spectroscopy (HREELS) and low energy electron diffraction (LEED) and theoretical developments in the analysis of adsorbate vibrations to study the chemistry of a wide range of nitrogen containing hydrocarbons on transition metal surfaces. Fifteen technical reports resulted from the research. Keywords: Cyanogen, Transition metals, Vibrations of Adsorbates, Surface defects.
Book Synopsis Electron Energy Loss Spectroscopy and Surface Vibrations by : H. Ibach
Download or read book Electron Energy Loss Spectroscopy and Surface Vibrations written by H. Ibach and published by Academic Press. This book was released on 2013-10-22 with total page 379 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electron Energy Loss Spectroscopy and Surface Vibrations is devoted to electron energy loss spectroscopy as a probe of the crystal surface. Electrons with energy in the range of a few electron volts sample only a few atomic layers. As they approach or exit from the crystal, they interact with the vibrational modes of the crystal surface, or possibly with other elementary excitations localized there. The energy spectrum of electrons back-reflected from the surface is thus a rich source of information on its dynamics. The book opens with a detailed analysis of the physics that controls the operation of the monochromator, which is the core of the experimental apparatus. Separate chapters follow on the interaction of electrons with vibrational modes of the surface region and with other elementary excitations in the vicinity; the lattice dynamics of clean and adsorbate-covered surfaces, with emphasis on those features of particular relevance to surface vibrational spectroscopy; and selected applications vibration spectroscopy in surface physics and chemistry.
Book Synopsis High-resolution Electron Energy Loss Spectroscopy by : Judith A. Gates
Download or read book High-resolution Electron Energy Loss Spectroscopy written by Judith A. Gates and published by . This book was released on 1983 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Electron Energy Loss Spectroscopy of CH/sub 3/N/sub 2/CH/sub 3/ Adsorbed on Ni(100), Ni(111), Cr(100), Cr(111). by :
Download or read book Electron Energy Loss Spectroscopy of CH/sub 3/N/sub 2/CH/sub 3/ Adsorbed on Ni(100), Ni(111), Cr(100), Cr(111). written by and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A study of the adsorption of CH/sub 3/N/sub 2/CH/sub 3/ on Ni(100), Ni(111), Cr(100), and Cr(111) using high resolution electron energy loss spectroscopy (EELS) is presented. Under approximately the same conditions of coverage, the vibrational spectra of CH/sub 3/N/sub 2/CH/sub 3/ on these four surfaces are quite distinct from one another, implying that the CH/sub 3/N/sub 2/CH/sub 3/-substrate interaction is very sensitive to the physical and electronic structure of each surface. In addition to the room temperature studies, the evolution of surface species on the Ni(100) surface in the temperature range 300 to 425 K was studied. Analysis of the Ni(100) spectra indicates that molecular adsorption, probably through the N lone pair, occurs at room temperature. Spectra taken after annealing the CH/sub 3/N/sub 2/CH/sub 3/-Ni(100) surfaces indicate that CH and CN bond scission occurred at the elevated temperatures. Decomposition of CH/sub 3/N/sub 2/CH/sub 3/ takes place on the Ni(111), Cr(100), and Cr(111) surfaces at room temperature, as evidenced by the intensity of the carbon-metal stretch in the corresponding spectra. Possible identities of coadsorbed dissociation products are considered. The stable coverage of surface species on all four surfaces at 300 K is less than one monolayer. A general description of an electron energy loss (EEL) spectrometer is given. Followed by a more specific discussion of some recent modifications to the EEL monochromator assembly used in this laboratory. Both the previous configuration of our monochromator and the new version are briefly described, as an aid to understanding the motivation for the changes as well as the differences in operation of the two versions. For clarity, the new monochromator design is referred to as variable pass, while the previous design is referred to as double pass. A modified tuning procedure for the new monochromator is also presented. 58 refs., 11 figs.
Book Synopsis High-resolution and Time-resolved Electron Energy Loss Spectroscopy Studies of Adsorbate Bonding and Reactivity by : Lee James Richter
Download or read book High-resolution and Time-resolved Electron Energy Loss Spectroscopy Studies of Adsorbate Bonding and Reactivity written by Lee James Richter and published by . This book was released on 1988 with total page 964 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis High Resolution Electronic Spectroscopy of Small Molecules by : Geoffrey Duxbury
Download or read book High Resolution Electronic Spectroscopy of Small Molecules written by Geoffrey Duxbury and published by CRC Press. This book was released on 2017-08-02 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over recent years electronic spectroscopy has developed significantly, with key applications in atmospheric chemistry, astrophysics and astrochemistry. High Resolution Electronic Spectroscopy of Small Molecules explores both theoretical and experimental approaches to understanding the electronic spectra of small molecules, and explains how this information translates to practice. Professors Geoffrey Duxbury and Alexander Alijah present the links between spectroscopy and photochemistry, and discuss theoretical treatments of the interaction between different electronic states. They provide a thorough discussion of experimental techniques, and explore practical applications. This book will be an indispensable reference for graduate students and researchers in physics and chemistry working on theoretical and practical aspects of electronic spectra, as well as atmospheric scientists, photochemists, kineticists and professional spectroscopists.
Book Synopsis THE APPLICATION OF HIGH RESOLUTION ELECTRON ENERGY LOSS SPECTROSCOPY TO THE CHARACTERIZATION OF ADSORBED MOLECULES ON RHODIUM SINGLE CRYSTAL SURFACES. by :
Download or read book THE APPLICATION OF HIGH RESOLUTION ELECTRON ENERGY LOSS SPECTROSCOPY TO THE CHARACTERIZATION OF ADSORBED MOLECULES ON RHODIUM SINGLE CRYSTAL SURFACES. written by and published by . This book was released on 1980 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt: The scattering of low energy electrons by metal surfaces has been studied for many years now. The electron's ease of generation and detection and high surface sensitivity (low penetration depth) make it an ideal probe for surface scientists. The impinging electron can interact with the surface in basically two ways: it can either elastically reflect (or diffract) from the surface without losing energy or lose a portion of it's incident energy and inelastically scatter. In this paper we will be concerned with only one of many possible inelastic scattering processes: the loss of the electron's energy to the vibrational modes of atoms and molecules chemisorbed on the surface. This technique is known as high resolution electron energy loss spectroscopy (or ELS, EELS, HRELS, HREELS, etc.).
Book Synopsis Electron Energy Loss Spectroscopy of CH3N2CH3 Adsorbed on Ni(100), Ni(111), Cr(100), Cr(111). by :
Download or read book Electron Energy Loss Spectroscopy of CH3N2CH3 Adsorbed on Ni(100), Ni(111), Cr(100), Cr(111). written by and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A study of the adsorption of CH3N2CH3 on Ni(100), Ni(111), Cr(100), and Cr(111) using high resolution electron energy loss spectroscopy (EELS) is presented. Under approximately the same conditions of coverage, the vibrational spectra of CH3N2CH3 on these four surfaces are quite distinct from one another, implying that the CH3N2CH3-substrate interaction is very sensitive to the physical and electronic structure of each surface. In addition to the room temperature studies, the evolution of surface species on the Ni(100) surface in the temperature range 300 to 425 K was studied. Analysis of the Ni(100) spectra indicates that molecular adsorption, probably through the N lone pair, occurs at room temperature. Spectra taken after annealing the CH3N2CH3-Ni(100) surfaces indicate that CH and CN bond scission occurred at the elevated temperatures. Decomposition of CH3N2CH3 takes place on the Ni(111), Cr(100), and Cr(111) surfaces at room temperature, as evidenced by the intensity of the carbon-metal stretch in the corresponding spectra. Possible identities of coadsorbed dissociation products are considered. The stable coverage of surface species on all four surfaces at 300 K is less than one monolayer. A general description of an electron energy loss (EEL) spectrometer is given. Followed by a more specific discussion of some recent modifications to the EEL monochromator assembly used in this laboratory. Both the previous configuration of our monochromator and the new version are briefly described, as an aid to understanding the motivation for the changes as well as the differences in operation of the two versions. For clarity, the new monochromator design is referred to as variable pass, while the previous design is referred to as double pass. A modified tuning procedure for the new monochromator is also presented. 58 refs., 11 figs.
Book Synopsis Vibrational Spectroscopy of Adsorbates by : R.F. Willis
Download or read book Vibrational Spectroscopy of Adsorbates written by R.F. Willis and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the past few years, there has been a growing awareness of the vibratio nal properties of solid surfaces and adsorbates due to a steady growth in the number of experimental techniques which have evolved with sufficient resolution and surface sensitivity. An understanding of the surface vibratio nal modes is of fundamental importance in many areas of the physics and chemistry of surfaces, most notably in the field of heterogeneous catalysis on metals and alloys. The present volume derives from a one day meeting of invited lectures, held under the auspices of the Thin Films and Surfaces Section of the Insti tute of Physics in the Cavendish Laboratory, University of Cambridge, 13 December 1979. The object was to bring together specialists from various diverse fields who would examine the wide variety of methods currently avail able for studying surface adsorbate vibrations. Since these methods cover several scientific disciplines, it was subsequently felt that it would be useful to provide a permanent record of the talks as a source lor future reference by workers in what is rapidly becoming an expanding field of',inter est in an increasing number of laboratories. The contributions, however, are not in any way meant to constitute exhaustive reviews.
Book Synopsis The Application of High Resolution Electron Energy Loss Spectroscopy to the Characterization of Small Molecules Adsorbed on Rhodium Sufaces by : Lawrence Henry Dubois
Download or read book The Application of High Resolution Electron Energy Loss Spectroscopy to the Characterization of Small Molecules Adsorbed on Rhodium Sufaces written by Lawrence Henry Dubois and published by . This book was released on 1980 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Vibrational Spectroscopies for Adsorbed Species by : Alexis T. Bell
Download or read book Vibrational Spectroscopies for Adsorbed Species written by Alexis T. Bell and published by . This book was released on 1980 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Electron Energy Loss Spectroscopy and Surface Vibrations by : Harald Ibach
Download or read book Electron Energy Loss Spectroscopy and Surface Vibrations written by Harald Ibach and published by . This book was released on 1982 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis High-resolution Electron-energy-loss Spectroscopy and Photoelectron-diffraction Studies of the Geometric Structure of Adsorbates on Single-crystal Metal Surfaces by :
Download or read book High-resolution Electron-energy-loss Spectroscopy and Photoelectron-diffraction Studies of the Geometric Structure of Adsorbates on Single-crystal Metal Surfaces written by and published by . This book was released on 1982 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Two techniques which have made important contributions to the understanding of surface phenomena are high resolution electron energy loss spectroscopy (EELS) and photoelectron diffraction (PD). EELS is capable of directly measuring the vibrational modes of clean and adsorbate covered metal surfaces. In this work, the design, construction, and performance of a new EELS spectrometer are described. These results are discussed in terms of possible structures of the O-Cu(001) system. Recommendations for improvements in this EELS spectrometer and guidelines for future spectrometers are given. PD experiments provide accurate quantitative information about the geometry of atoms and molecules adsorbed on metal surfaces. The technique has advantages when used to study disordered overlayers, molecular overlayers, multiple site systems, and adsorbates which are weak electron scatterers. Four experiments were carried out which exploit these advantages.
Book Synopsis High Resolution Electron Energy Loss Spectroscopy of Surface Excitations by : Joseph Anthony Stroscio
Download or read book High Resolution Electron Energy Loss Spectroscopy of Surface Excitations written by Joseph Anthony Stroscio and published by . This book was released on 1986 with total page 1202 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Publications of the National Institute of Standards and Technology ... Catalog by : National Institute of Standards and Technology (U.S.)
Download or read book Publications of the National Institute of Standards and Technology ... Catalog written by National Institute of Standards and Technology (U.S.) and published by . This book was released on 1991 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NBS Special Publication written by and published by . This book was released on 1968 with total page 684 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Surfaces and Interfaces of Solid Materials by : Hans Lüth
Download or read book Surfaces and Interfaces of Solid Materials written by Hans Lüth and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt: Surfaces and Interfaces of Solid Materials emphasises both experimental and theoretical aspects of surface and interface physics. Beside the techniques of preparing well-defined solid surfaces and interfaces basic models for the description of structural, vibronic and electronic properties of interfaces are described, as well as fundamental aspects of adsorption and layer growth. Because of its importance for modern microelectronics special emphasis is placed on the electronic properties of semiconductor interfaces and heterostructures. Experimental topics covering the basics of ultrahigh-vacuum technology, electron optics, surface spectroscopies and electrical interface characterization techniques are presented in the form of separate panels.
