A comparison is made between X-ray absorption spectra at the sulphur K edge for CdS in wurtzite and zincblende structures. Differences between the polarization dependences of the X-ray spectra are expected due to the differences in symmetry for the two modifications. Multiple-scattering calculations in both structures are compared to published spectra and allow us to interpret a strong dichroic effect in the wurtzite structure. The intensity of a specific resonance is related to the middle-range order around sulphur atoms and potential applications of this fingerprint analysis are proposed.
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Levelut et al. (1995) studied this question.
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