Abstract
In this chapter we outline the Bloch-wave dynamical theory of high-energy transmission electron diffraction (HEED), after defining some useful quantities and the relationships between them. We then specialize to the two-beam case, which provides the quickest and most useful guide to CBED intensity distributions. However, the study of non-centrosymmetric crystals requires the three-beam theory, so this is also treated. Both nondegenerate and degenerate perturbation theory are introduced and serve as the foundation for our treatment of three-beam theory, dynamic HOLZ effects, and absorption in both centric and acentric crystals. The purpose of this chapter is to collect together useful results to be used in the later chapters on applications, and to derive these otherwise scattered results in a consistent formalism.
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© 1992 Springer Science+Business Media New York
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Spence, J.C.H., Zuo, J.M. (1992). Theory. In: Electron Microdiffraction. Springer, Boston, MA. https://doi.org/10.1007/978-1-4899-2353-0_3
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DOI: https://doi.org/10.1007/978-1-4899-2353-0_3
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4899-2355-4
Online ISBN: 978-1-4899-2353-0
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