There are several proof now that the TKD (Transmission Kikuchi Diffraction) signal is formed at the lower surface of the sample. How big is the fraction of electrons which pass the sample without practically any loss of energy to form the signal in comparison to EBSD? How does it change the acquisition time? How the radial intensity distribution is described?
Yes, I think so. Are you doing TKD in SEM? If yes, how much longer you have to acquire a pattern of approximately comparable intensity and contrast?
I am starting to do so, since we just purchased a new FIB/SEM! But as far as I have read, I believe thickness of the lamella determines resolution or contrast of the final pattern. Atomic density could also affect, but compare to the thickness, that is not a major factor.
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