A method to determine the ratio between lattice parameter and electron wavelength from Kikuchi line intersections

Three Kikuchi lines not belonging to the same zone, which nearly intersect at the same point, can be utilized for determination of the ratio between lattice parameter and electron wavelength. The method given is analogous to a method based on Kossel line intersections in the X-ray case. One example is given in which the electron wavelength is determined with an uncertainty of ca. 0.1%.