I have a radial diffraction profile of X-ray on a thin wood sample (figure below). I want to calculate microfibril angle using the data of this graph.
1- According to Tabet and Aziz (2013), I should draw three lines (the baseline, Tangent of inflection point, vertical line) and calculate T parameter, then put T parameter in Cave (1968) or Yamamoto et al (1993) formula. Is there any software to automatically draw these three lines and extract T parameter?
OR
2- Should I necessarily change current radial diffraction profile to azimuthal diffraction profile? If so, how can I perform azimuthal integration based on these data?
Actually this profile is not suitable to estimate MFA, you have to obtain the diffraction intensity only for the 002 diffraction arc, for theta = 11.35° for X-ray wavelength of 1.54 angstroms). It is sometimes called the 002 circle. There are some free applications in python that allow you to do such an integration from the diffractogram taken from the diffractometer
Dear Dr. Ruelle,
Thank you. Can you name one?
P.S: I was just going to e-mail Prof. Clair, again. I've e-mailed him months ago, and his answer was the best I got so far. You, French rock :)
Dear Dr. Oladi, here is the one to read images from diffractometer:
https://pypi.python.org/pypi/fabio/0.1.4
And the one to make the integration of the signal:
https://pypi.python.org/pypi/pyFAI/0.11.0
I hope this will be useful,
Regards
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