Kossel-Möllenstedt (K-M) Fringes
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In CBED measurements, when exactly in a zone axis, the transmitted undiffracted beam (000)-disc usually contains concentric diffuse fringes known as Kossel-Möllenstedt (K-M) fringes. The number of the fringes increases by one every time the thickness increases by one extinction distance.

 

 

 

 

 

 

 

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