[Ifeffit] Advice on using Athena for XANES LCF on spectra with a small edge step?

daltonabdala at gmail.com daltonabdala at gmail.com
Tue Jan 15 18:31:42 CST 2019


Hello, Mike et al.,

you can correct for self-absorption using the "self-absorption correction
tool" in Athena, as long as the chemical composition of your sample is
known.

In case it's not possible to determine the chemical composition of you
sample, and your sample is conductive, then running your experiment in
total electron yield (TEY) mode would be an alternative.

If you're sample isn't suitable for TEY, and the only choice you have left
is to run it in fluorescence mode, then you should dilute your sample to a
total concentration of P of ~ 0.1 - 0.15% to avoid self-absorption.

It's very important to think through your experiment/samples before you get
to the beamline as it avoids you running into such issues, saving you a lot
of time.

Hope it helps ;)


 - Dalton Abdala
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