Figure 2
Distribution in the main categories of techniques used in the synchrotron study of ancient materials, based on the number of publications known to the authors. DIFF: X-ray diffraction and scattering; XRF: X-ray fluorescence; XAS: X-ray absorption spectroscopy; TOMO: X-ray tomography and laminography; FTIR: Fourier-transform infrared microspectroscopy; OTH: STXM, X-PEEM and XPS, UV–visible spectroscopy. (a) Total number of publications in the 1986–2010 period. (b) Share (in %) of each category in the 2005–2010 period. Figures on the bars represent the increase in use of the techniques from the 2001–2005 to the 2006–2010 period. Note the very strong increase in tomographic techniques, although today mainly restricted to palaeontological studies. |