Physics and Chemistry of Minerals

, Volume 38, Issue 4, pp 293–303

Raman study of apatite amorphised with swift heavy ions under various irradiation conditions

Authors

    • Institute of Earth SciencesUniversity of Heidelberg
    • Alfred Wegener Institute for Polar and Marine Research
  • Ulrich A. Glasmacher
    • Institute of Earth SciencesUniversity of Heidelberg
  • Beatrice Schuster
    • GSI Helmholtz Centre for Heavy Ion Research
    • Technische Universität Darmstadt
  • Christina Trautmann
    • GSI Helmholtz Centre for Heavy Ion Research
  • Ronald Miletich
    • Institute of Earth SciencesUniversity of Heidelberg
  • Reinhard Neumann
    • GSI Helmholtz Centre for Heavy Ion Research
Original Paper

DOI: 10.1007/s00269-010-0403-2

Cite this article as:
Weikusat, C., Glasmacher, U.A., Schuster, B. et al. Phys Chem Minerals (2011) 38: 293. doi:10.1007/s00269-010-0403-2

Abstract

Crystallographically oriented Durango fluorapatites were exposed to swift heavy ions (Xe, Ta, Au, U) at different irradiation conditions. Beam-induced sample modifications were investigated with respect to the effect of fluence (109–1013 ions/cm2), electronic energy loss (18–27 keV/nm), and pressure (3.6–11.5 GPa) applied during irradiation. In situ high-pressure irradiation was performed in diamond anvil cells. Confocal Raman spectroscopy was used to trace the occurring changes in the crystal lattice. Fragmentation of the crystal specimen depends on the orientation and sample thickness and was found to scale with energy loss and fluence. The radiation damage for irradiation along the c-axis was found to be larger than for the 〈hk0〉 direction, independent of the confining pressure. Observations on samples irradiated at high pressures indicate a stabilising effect, leading to reduced amorphisation in comparison to the samples irradiated without pressure.

Keywords

Apatite Raman spectroscopy Swift heavy ions Radiation damage High pressure

Copyright information

© Springer-Verlag 2010