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2011
ACL
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M.R.Ammar, E.Charon, J.N.Rouzaud, J.Aleon, G.Guimbretière, P.Simon, 'On a reliable structural characterization of polished carbons in meteorites by Raman microspectroscopy', Spectr. Lett. 44 535–538 (2011) doi:10.1080/00387010.2011.610417
Polished section of Acapulco meteorite was used for the structural examination of graphitic matter by Raman microspectroscopy. The polishing process was shown to be necessary for the samples, where carbon matter is embedded in metallic phases. However, this process is known to drastically change the Raman spectrum, inducing unacceptable errors in the intrinsic structural characterization of these carbon materials. The deconvolution of spectra shows that the G-band width, related to the only bond stretching of sp2 atoms, gives real structural information, even on polished carbon, whereas the common intensity ratio ID/IG, too sensitive to polishing process, has to be avoided.
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