[3dem] [TEM] amplitude contrast

[Philip Koeck]

Hi again.

I’ve read a bit of Angert et al. 2000 now and I can rephrase my question.
In equation 2 there are 3 terms to the generalized phase shift: elastic phase contrast, elastic amplitude contrast and inelastic amplitude contrast.
The third is obviously due to removal of inelastically scattered electrons by the filter.

My question: What is the second term due to?

All the best,

Philip

Från: Sacha De Carlo [mailto:sacha.decarlo at dectris.com]
Skickat: den 15 augusti 2017 14:29
Till: Philip Koeck
Kopia: 3dem at ncmir.ucsd.edu
Ämne: Re: [3dem] [TEM] amplitude contrast

...thus my statement with a "may provide" instead of "will" (provide answers to...).

Alright, let's try this again, forward 8 years (2000), Angert et al, zero-loss (no inelastic scattering) and of course in a practical sense the ice thickness and size of the aperture DO influence the contrast (for the same defocus or in-focus image), but I do not recall other papers where it was quantified methodically (thoroughly)...

Cheers,
Sacha
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