Multiple scattering theory for fast electrons in single crystals and Kikuchi patterns

Autor:	S.L. Dudarev, M.I. Ryazanov
Rok vydání:	1988
Předmět:	Diffraction Elastic scattering Condensed matter physics business.industry Chemistry Electron Inelastic scattering Crystal Optics Electron diffraction Structural Biology business Kikuchi line Single crystal
Zdroj:	Acta Crystallographica Section A Foundations of Crystallography. 44:51-61
ISSN:	0108-7673
DOI:	10.1107/s0108767387008389
Popis:	By solving the kinetic equation for the density matrix of fast electrons the intensity distribution of the diffuse background and the Kikuchi lines and bands is found. It is shown that the Kikuchi pattern contrast depends on the angle of deflection of the scattered particles and the crystal thickness. For a thin crystal the expressions obtained coincide with the usual results found in the single inelastic scattering approximation. The theory takes into account both the dynamical diffraction and multiple inelastic scattering of electrons and gives a simple interpretation of a variety of contrast effects observed in thick single crystals.
Databáze:	OpenAIRE
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