Extinction contours and Kikuchi lines in electron microscopy

Abstract
The use of Kikuchi lines is very familiar as a part of electron microscopic technique; it is not so widely recognized that bend contours may be used in the same way. The two techniques are in fact very similar and generally complementary. The differences between the methods are examined and the advantages of each discussed. The use of bend contours has a number of advantages of convenience, especially for complicated specimens.