Various types of carbonaceous samples, all coming from the plasma facing components of the Tore Supra tokamak, are analysed using Raman spectroscopy. They form a collection with a great variety of structures, from nano-crystalline graphite to amorphous carbons. We focus here on some of the Raman properties, the G band width and the relative intensity of the D and G bands. We extend the Raman diffusion dependence with the excitation wavelength known for nanocrystalline graphite to amorphous carbons and we thus get a consistent description of the Raman properties of both types of carbon.
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