Journal article
Ion tracks in apatite at high pressures: The effect of crystallographic track orientation on the elastic properties of fluorapatite under hydrostatic compression
P Schouwink, R Miletich, A Ullrich, UA Glasmacher, C Trautmann, R Neumann, BP Kohn
Physics and Chemistry of Minerals | SPRINGER | Published : 2010
Abstract
Static elasticity measurements at high pressures were carried out on oriented fluorapatite single crystals, some of which contained oriented amorphous ion tracks (ITs) implanted with relativistic Au ions (2.2 GeV) from the UNILAC linear accelerator at GSI, Darmstadt. High-pressure experiments on irradiated and non-irradiated crystal sections were carried out in diamond-anvil high-pressure cells under hydrostatic conditions. In situ single-crystal diffraction was performed to determine the high-precision lattice parameters, simultaneously monitoring the widths of X-ray diffraction Bragg peaks. High-pressure Raman spectra were analyzed with respect to the frequency shift and widths of bands, w..
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Awarded by Bundesministerium für Bildung und Forschung
Funding Acknowledgements
We thank Ilona Fin and Oliver Wienand for the careful preparation of the polished crystal sections, Christian Weikusat for his instructions in using the Raman spectrometer and evaluating the spectra as well as for performing the irradiation experiments at GSI, and Hans-Peter Meyer for his help with carrying out the microprobe analyses. Financial support within the BMBF Verbundprojekt ( project grant 05KK7VH) is acknowledged. Ulrich A. Glasmacher and Ronald Miletich would like to thank also Rodolfo Corona-Esquivel, Mexico City, for his support during the field trip at Durango. Raman spectra were fitted using the freeware FITYK 0.8.6 (http://www.unipress.waw.pl/fityk/).