PPT Slide

ORIENTATION IMAGING MICROSCOPY (OIM)

Diffraction of inelastically scattered electrons by lattice planes hkl according to Bragg’s law:

Sections of a pair of Kossel cones form a pair of parallel straight Kikuchi lines on the flat phosphor screen.

For maximum intensity, the specimen surface is steeply tilted at an angle of 20°-30° from grazing incidence.

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