A thorough tensor analysis of the Bragg-forbidden reflection (00.3)ₕ in corundum systems having a global center of inversion, such as V₂O₃ and α-Fe₂O₃, shows that anomalous x-ray resonant diffraction can access chiral properties related to the dipole-quadrupole (E1-E2) channel via an interference with the pure quadrupole-quadrupole (E2-E2) process. This is also confirmed by independent ab initio numerical simulations. In such a way, it becomes possible to detect chiral quantities in systems where dichroic absorption techniques are ineffective.
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Matteo et al. (2003) studied this question.
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