Elastic and Inelastic Diffraction of Low-Energy Electrons from Al (100): Double-Diffraction Model
作者:
C. B. Duke,
A. J. Howsmon,
G. E. Laramore,
期刊:
Journal of Vacuum Science and Technology
(AIP Available online 1971)
卷期:
Volume 8,
issue 1
页码: 10-13
ISSN:0022-5355
年代: 1971
DOI:10.1116/1.1316257
出版商: American Vacuum Society
数据来源: AIP
摘要:
The isotropic-scatterer, inelastic-collision model is used to analyze experimental elastic intensity profiles characteristic of electrons in the energy range10≤E≤120 eVscattered from Al(100). Using the double-diffraction approximation a satisfactory description of these profiles is achieved for a variety of incident beam angles, θ≤25°. The temperature dependence of these profiles due to both thermal expansion and lattice vibrations is examined. Using the inelastic-collision-model description of the elastic scattering, the RPA plasmon dispersion relations and lifetimes, and the sharp-junction, “uniform” electron fluid electron-plasmon interaction vertices, the inelastic energy and angular profiles for the two-step excitation of bulk and surface plasmons are predicted using a double-diffraction analysis of this process. Observation of these profiles and their correlation with such an analysis constitutes a critical test of existing models of inelastic diffraction.
点击下载:
PDF
(446KB)
返 回