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liyje 发表于 2007-7-9 21:44

Dynamical theory of elastic electron diffraction at small angles

The dynamical theory of elastic electron diffraction at small angles is very important
to understand both diffraction patterns and images. It uses several approximations,
in particular the small angle diffraction approximation. This approximation is
satisfied when the energy of the incident electrons is equal or larger than 50 kV
(depending on crystal mean atomic number). This theory is presented here following
Portier and Gratias [Portier, 1981].

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