Photoemission Studies of Core Level Energy Shifts in Clean and Adsorbate Covered Tungsten and Platinum Single Crystal Surfaces PDF Download
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Author: Arthur Josephus Viescas
Publisher:
ISBN:
Category :
Languages : en
Pages : 302
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Author: Arthur Josephus Viescas
Publisher:
ISBN:
Category :
Languages : en
Pages : 302
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Author: Glyn Peter Derby
Publisher:
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Category :
Languages : en
Pages :
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Author:
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ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 468
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Category :
Languages : en
Pages :
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Photoemission energy distribution experiments on clean metal and adsorbate-covered surfaces were performed under ultrahigh vacuum conditions by using x-ray and ultraviolet photon sources in the laboratory as well as continuously-tunable, highly polarized synchrotron radiation obtainable at the Stanford Synchrotron Radiation Laboratory (SSRL). Studies focused on two general areas: cross-section modulation in the photoemission process was studied as a function of photon energy and orbital composition. Sharp decreases in intensity of the valence bands of several transition metals (i.e., Ag, Au, and Pt) are attributed to the radial nodes in the respective wave functions. Adsorbate photoemission studies of CO adsorbed on platinum single crystals have demonstrated a very high spectral sensitivity to the 4sigma and (1.pi. + 5sigma) peaks of CO at photon energies of 150 eV. Angle-resolved photoemission allowed determination of the orientation of CO chemisorbed on a Pt (111) or Ni(111) surface. Prelinimary results at high photon energies (approximately 150 eV) indicated scattering from the substrate which could yield chemisorption site geometries.
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Category : Dissertations, Academic
Languages : en
Pages : 1252
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Author: Donald T. Hawkins
Publisher: Springer Science & Business Media
ISBN: 1468413872
Category : Science
Languages : en
Pages : 305
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Auger electron spectroscopy is rapidly developing into the single most powerful analytical technique in basic and applied science.for investigating the chemical and structural properties of solids. Its ex plosive growth beginning in 1967 was triggered by the development of Auger analyzers capable of de tecting one atom layer of material in a fraction of a second. Continued growth was guaranteed firstly by the commercial availability of apparatus which combined the capabilities of scanning electron mi croscopy and ion-mill depth profiling with Auger analysis, and secondly by the increasing need to know the atomistics of many processes in fundamental research and engineering applications. The expanding use of Auger analysis was accompanied by an increase in the number of publications dealing with it. Because of the developing nature of Auger spectroscopy, the articles have appeared in many different sources covering diverse disciplines, so that it is extremely difficult to discover just what has or has not been subjected to Auger analysis. In this situation, a comprehensive bibliography is obviou-sly useful to those both inside and outside the field. For those in the field, this bibliography should be a wonderful time saver for locating certain references, in researching a particular topic, or when considering various aspects of instrumentation or data analysis. This bibliography not only provides the most complete listing of references pertinent to surface Auger analysis available today, but it is also a basis for extrapolating from past trends to future expectations.
Author:
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Category : Metallurgy
Languages : en
Pages : 1558
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Author: Silvano Lizzit
Publisher:
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Category :
Languages : en
Pages : 150
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Author:
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Category : Metallurgy
Languages : en
Pages : 1390
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Author: Kristine Ann Bertness
Publisher:
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Category :
Languages : en
Pages : 202
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