On the relationship between diffracted beam intensity and bloch function orthogonality in the dynamical theory of electron diffraction

1988 ◽  
Vol 105 (1) ◽  
pp. 45-52 ◽  
Author(s):  
H. S. Kim ◽  
S. S. Sheinin
Keyword(s):  
Electron Diffraction ◽  
Dynamical Theory ◽  
Bloch Function ◽  
Beam Intensity ◽  
The Relationship

Systematic Reflections and the Two Beam Concept of Extinction Distance

1967 ◽  
Vol 25 ◽  
pp. 332-333
Author(s):  
S. S. Sheinin ◽  
C. D. Cann
Keyword(s):  
Dynamical Theory ◽  
Beam Intensity

The effects of systematic reflections on the variation of diffracted beam intensity with depth in a crystal can only be taken into account by using the multi-beam dynamical theory. The results of calculations of this kind, which are presented here, indicate that the intensity profiles obtained are not periodic. Since extinction distance is a concept strictly applicable only when the diffracted beam intensity varies periodically with depth, its use as a parameter in describing multi-beam intensity profiles must be carefully considered.

Microdiffraction Patterns of Small Metallic Particles II; Theoretical Analysis

1982 ◽  
Vol 40 ◽  
pp. 668-669
Author(s):  
A. Gómez ◽  
P. Schabes-Retchkiman ◽  
M. José-Yacamán ◽  
T. Ocaña
Keyword(s):  
Experimental Data ◽  
Electron Diffraction ◽  
Theoretical Analysis ◽  
Size Range ◽  
Dynamical Theory ◽  
Metallic Particles ◽  
Splitting Effect

The splitting effect that is observed in microdiffraction pat-terns of small metallic particles in the size range 50-500 Å can be understood using the dynamical theory of electron diffraction for the case of a crystal containing a finite wedge. For the experimental data we refer to part I of this work in these proceedings.

Dynamical Theory of Diffraction. I. Electron Diffraction

1966 ◽  
Vol 21 (2) ◽  
pp. 326-335 ◽  
Author(s):  
Y. H. Ohtsuki ◽  
S. Yanagawa
Keyword(s):  
Electron Diffraction ◽  
Dynamical Theory

Electron diffraction from crystal defects: Fraunhofer effects from plane faults

1966 ◽  
Vol 293 (1433) ◽  
pp. 169-180 ◽  
Keyword(s):  
Electron Diffraction ◽  
Intensity Distribution ◽  
Stacking Faults ◽  
Dynamical Theory ◽  
Crystal Defects ◽  
Similar Calculation ◽  
Selected Area Electron Diffraction ◽  
Periodic Intensity ◽  
Diffraction Patterns ◽  
Calculated Intensity

The selected area electron diffraction patterns from a crystal containing a stacking fault have been observed to exhibit a number of unusual features. In some cases a periodic intensity distribution about the Bragg spot, in other cases streaking. By applying Kirchhoff’s theory of diffraction and using the dynamical theory of electron diffraction this intensity distribution around the Bragg spots in the electron diffraction patterns from stacking faults has been calculated. The calculated intensity distributions compare favourably with experiment. A similar calculation has also been carried out to predict the intensity distribution around Bragg spots in the selected area electron diffraction patterns from a crystal containing a grain boundary.

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