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Scattering of Thermal Energy Atoms

from Disordered Surfaces

  • Book
  • © 1989

Overview

Editors:
  1. Bene Poelsema
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    You can also search for this editor in PubMed   Google Scholar

  2. George Comsa
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    You can also search for this editor in PubMed   Google Scholar

Part of the book series: Springer Tracts in Modern Physics (STMP, volume 115)

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Table of contents (8 chapters)

  1. Front Matter

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  2. Introduction

    • Poelsema Bene, George Comsa
    Pages 1-3

  3. Experimental

    • Poelsema Bene, George Comsa
    Pages 4-8

  4. The scattering mechanism

    • Poelsema Bene, George Comsa
    Pages 9-28

  5. Diffuse scattering as a tool to probe the lateral distribution of adatoms and vacancies (Homogeneous systems)

    • Poelsema Bene, George Comsa
    Pages 29-39

  6. Diffuse scattering as a probe of the lateral distribution in heterogeneous systems

    • Poelsema Bene, George Comsa
    Pages 40-51

  7. The characterization of stepped surfaces by means of coherent and diffuse helium scattering

    • Poelsema Bene, George Comsa
    Pages 52-72

  8. TEAS as a probe of thermal roughness on monocrystalline surfaces

    • Poelsema Bene, George Comsa
    Pages 73-82

  9. TEAS as a probe of surface coverage

    • Poelsema Bene, George Comsa
    Pages 83-99

  10. Back Matter

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Keywords

About this book

A variety of novel applications for the investigation of disordered surfaces by beams of thermal energy atoms are discussed and illustrated by numerous examples. A straightforward semiclassical approach is introduced to yield a remarkably detailed insight into the lateral distributions of diffuse scatterers such as adsorbates, vacancies and atomic steps. The recent discovery that the long range Van der Waals force is the cause of the unusually large cross-sections for diffuse He-scattering on individual defects and impurities led the authors to propose a new methods of surface analysis. They introduce a semiclassical method, the overlap approach, to give a simple and detailed description of He-scattering from disordered surfaces. The method yields subtle, otherwise hardly obtainable information on the nature of interactions between diffuse scatterers. The authors address such questions as the lateral distribution of adsorbates, two-dimensional phase transitions, surface diffusions, and the morphology of growing or sputtered layers.

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