Which part of a sample interacts with the beam first?

Ivanlh20 / multem

MULTEM is a powerful and advanced collection of C++ routines with CUDA support, designed to perform efficient and accurate multislice simulations for various TEM experiments such as HRTEM, STEM, ISTEM, ED, PED, CBED, ADF-TEM, ABF-HC, EFTEM, and EELS.

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Which part of a sample interacts with the beam first? #21

Closed thomasaarholt closed 4 years ago

thomasaarholt commented 5 years ago

If a "pretend" sample has two atoms, A and B, with z = 0 and 5 Å respectively, which atom will be hit by the beam first?

Another way of asking the same question is, "is the sample sat with the z-axis increasing towards the electron gun, or increasing away from the gun"?

Stealing @cophus excellent image from prism-em/prismatic#33:

This is important for my application.

Ivanlh20 commented 5 years ago

Hi Thomas, atom A will be hit first by the beam.

thomasaarholt commented 5 years ago

Great, thanks!