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1 results

  • The Potential of Materials Analysis by Electron Rutherford Backscattering as Illustrated by a Case Study of Mouse Bones and Related Compounds

  • Maarten Vos, Károly Tökési, Ilona Benkö
  • Journal:
    Microscopy and Microanalysis / Volume 19 / Issue 3 / June 2013
    Published online by Cambridge University Press:
    03 May 2013, pp. 576-586
    Print publication:
    June 2013

  • Electron Rutherford backscattering (ERBS) is a new technique that could be developed into a tool for materials analysis. Here we try to establish a methodology for the use of ERBS for materials analysis of more complex samples using bone minerals as a test case. For this purpose, we also studied several reference samples containing Ca: calcium carbonate (CaCO3) and hydroxyapatite and mouse bone powder. A very good understanding of the spectra of CaCO3 and hydroxyapatite was obtained. Quantitative interpretation of the bone spectrum is more challenging. A good fit of these spectra is only obtained with the same peak widths as used for the hydroxyapatite sample, if one allows for the presence of impurity atoms with a mass close to that of Na and Mg. Our conclusion is that a meaningful interpretation of spectra of more complex samples in terms of composition is indeed possible, but only if widths of the peaks contributing to the spectra are known. Knowledge of the peak widths can either be developed by the study of reference samples (as was done here) or potentially be derived from theory.