Browsing by Author "Bailo, D."

Now showing 1 - 2 of 2
  • Thumbnail Image
    Item
    Effect of disturbance induced by the electronic noise on the Energy Dispersive X-ray Diffraction patterns collection
    (ELSEVIER, 2009) Albertini, V. Rossi; Brunetti, A.; Bailo, D.; Moneta, P. Escarate; Fosca, M.; Sacchi, D.
    The Energy Dispersive X-ray Diffraction (EDXD) proved to be an interesting alternative to its conventional Angular Dispersive counterpart (ADXD) each time the in situ measurements are of concern. Indeed, although its resolution is lower than that of ADXD, nevertheless it may allow a very accurate determination of even minimal changes of crystalline powders lattice parameters, thanks to several advantages it exhibits with respect to ADXD. Among these advantages, discussed in the paper, the main is that no motion is required upon diffraction pattern collection. However, the reliability of EDXD results may be compromised by the presence of an electronic noise that, along with a broadening of the Bragg peaks, may induce a shift of their positions. To evaluate the magnitude of such shift and, therefore, the level of confidence in determining the lattice parameters, a systematic study of the disturbance due to the electronic noise is reported. (C) 2009 Elsevier B.V. All rights reserved.
  • Thumbnail Image
    Item
    Energy dispersive X-ray diffraction spectroscopy for rapid estimation of calcite in copper ores
    (PERGAMON-ELSEVIER SCIENCE LTD, 2009) Escarate, P.; Bailo, D.; Guesalaga, A.; Albertini, V. Rossi
    This article presents a novel technique for measuring the concentration of calcite in copper ore samples using energy dispersive X-ray diffraction (ED-XRD). The results are compared with ultraviolet fluorescence spectroscopy (UVF) for the same group of samples. This approach substantially shortens the measuring time with respect to the current laboratory procedures from 300 min down to 15 min and 9 min for energy dispersive X-ray diffraction and ultraviolet fluorescence spectroscopy, respectively, while preserving a good accuracy level (RMSE < 0.577).