Qualitative microanalysis of calcium local structure in tooth layers by means of micro-RRS

JUAN JOSÉ LEANI; HÉCTOR JORGE SÁNCHEZ; MARÍA CECILIA VALENTINUZZI; CARLOS PÉREZ; MIRIAM GRENÓN

JOURNAL OF MICROSCOPY-OXFORD

WILEY-BLACKWELL PUBLISHING, INC

Lugar: Londres; Año: 2013 vol. 250 p. 111 - 115

0022-2720

The resonant inelastic x-ray scattering is a process of second order which becomes important when the energy of the incident radiation is lower and close to an absorption edge. In this process, the emitted photons have a continuos energy distribution with a high eneryg cut-off limit. A qualitative study of the calcium local structure in the different layers of teeth was carried out by micro-RRS. Several measuremnets of tooth samples were taken using monochromatic synchrotron radiation at the XRF station of the D09B-XRF beamline at the brazilian synchrotron facility (LNLS, Campinas). Spectra were analyzed with specific software to fit the experimental data; residuals were determined and a fast Fourier transform procedure was applied. The oscillations detected present patterns that depend on the calcium state.