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Figure 2
Complex refractive index calculator MATLAB interface, using the polymer PTB7 as an example. (a) Result of calculation using the exact chemical formula; (b) exact β and approximate δ result given the average atomic number, mass and attenuation coefficient of PTB7.

Journal logoJOURNAL OF
APPLIED
CRYSTALLOGRAPHY
ISSN: 1600-5767
Volume 53| Part 4| August 2020| Pages 1108-1129
https://doi.org/10.1107/S1600576720005476
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