I want to simulate a SAXS experiment, getting a razing X-Ray experiment, 0.1 incident degree in thin-film setup, 0.01 degree per increment, ranging from 0.025 up to 3.000 degrees, using a pollycapilar, under 40KV and 30 mA, reception slit of 0.05 mm and calculate the scattering vector (q) to compare with the original measurement.
How reliable would it be, since no area detector is used for the overall scattering, only an inline fast X-ray detector in a theta-theta Bragg-Bretano geometry?
Dear Artur Braun
The intention is to use a conventional diffractometer under specific conditions and perform the calculation of the scattering vector. By the answer, you did.
The results seem to be reasonable.
I expect to hear considerations from someone who did the extraction.
Thanks for the answer.
q = 4pi*sin (2theta/2)/lambda =4pi*sin(theta)/lambda
Please see formula and drawing on page 13 of :
https://www.bnl.gov/ps/userguide/lectures/Lecture-7-Gang.pdf
Your 0.05mm reception slit is at the center of the detector window and the slit direction is perpendicular to the drawing plane.
Sometimes the scatter vector is expressed via the scatter angle phi (phi=2*theta); so we have for the vector magnitude: q = 4pi*sin(phi/2)/lambda
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