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Figure 3
Spatially resolved scattering intensity derived from the tomography data. For each sample, the entire dataset can be decomposed using a basis set, for which the number of vectors is determined based on the relative residue error [(A), see Section 5[link] for details]. (B) and (C) show the three basis vectors chosen for bamboo and the four vectors chosen for rice, respectively, where the vectors are offset for clarity and the dashed lines indicate the baselines (zero intensity). Decomposing the scattering data using these basis sets gives the sinograms for each basis vector, which are then converted into spatial distributions by tomographic reconstruction, shown in (D) and (E), where the color bar shows the relative magnitude. The scattering intensity for any given position in the virtual cross section can then be reconstructed, based on the local concentration of each component. This is shown in (F) and (G), with the scattering profiles corresponding to the three locations indicated in the insets by plus signs with the same color code.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 31| Part 4| July 2024| Pages 936-947
https://doi.org/10.1107/S1600577524004387
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