Re-use of this resource is governed by a Creative Commons
Attribution-
NonCommercial-ShareAlike 4.0 International
https://creativecommons.org/licenses/by-nc-sa/4.0/
NonCommercial-ShareAlike 4.0 International
https://creativecommons.org/licenses/by-nc-sa/4.0/
Drag
your mouse over the different parts of the diagram. Then click the 'Begin
animation' button.
Electrons are backscattered from the sample to form the
backscatter Kikuchi pattern.
Backscattered
electron transport in the sample is perturbed by the crystallographic
planes
Lattice
Planes
Phosphor
screen
The
electrons (in red) are diffracted if they meet a set of planes at the
Bragg angle for those planes
Overall,
we see an electron backscatter pattern on the phosphor screen as Kikuchi
lines are formed
The
symmetry of the pattern and the position of the
lines are used to identify the orientation of the grain
lines are used to identify the orientation of the grain