Fine Structure in Swift Heavy Ion Tracks in Amorphous ${\mathrm{SiO}}_{2}$

Fine Structure in Swift Heavy Ion Tracks in Amorphous ${SiO}_{2}$

P. Kluth, C. S. Schnohr, O. H. Pakarinen, F. Djurabekova, D. J. Sprouster, R. Giulian, M. C. Ridgway, A. P. Byrne, C. Trautmann, D. J. Cookson, K. Nordlund, and M. Toulemonde

Phys. Rev. Lett. 101, 175503 – Published 24 October 2008

Abstract

We report on the observation of a fine structure in ion tracks in amorphous ${SiO}_{2}$ using small angle x-ray scattering measurements. Tracks were generated by high energy ion irradiation with Au and Xe between 27 MeV and 1.43 GeV. In agreement with molecular dynamics simulations, the tracks consist of a core characterized by a significant density deficit compared to unirradiated material, surrounded by a high density shell. The structure is consistent with a frozen-in pressure wave originating from the center of the ion track as a result of a thermal spike.

Received 22 July 2008

DOI:https://doi.org/10.1103/PhysRevLett.101.175503

Authors & Affiliations

P. Kluth^1,*, C. S. Schnohr¹, O. H. Pakarinen², F. Djurabekova², D. J. Sprouster¹, R. Giulian¹, M. C. Ridgway¹, A. P. Byrne³, C. Trautmann⁴, D. J. Cookson⁵, K. Nordlund², and M. Toulemonde⁶

¹Department of Electronic Materials Engineering, Australian National University, Canberra ACT 0200, Australia
²Department of Physics and Helsinki Institute of Physics, University of Helsinki, Helsinki, Finland
³Department of Nuclear Physics, Australian National University, Canberra ACT 0200, Australia
⁴Materials Research Department, Gesellschaft für Schwerionenforschung (GSI), Darmstadt, Germany
⁵Australian Synchrotron, 800 Blackburn Road, Clayton VIC 3168, Australia
⁶Centre interdisciplinaire de recherche sur les Ions, les MAtériaux et la Photonique (CIMAP), Caen, France

^*Corresponding author. Patrick.kluth@anu.edu.au

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Vol. 101, Iss. 17 — 24 October 2008

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Physical Review Letters

Fine Structure in Swift Heavy Ion Tracks in Amorphous SiO2

P. Kluth, C. S. Schnohr, O. H. Pakarinen, F. Djurabekova, D. J. Sprouster, R. Giulian, M. C. Ridgway, A. P. Byrne, C. Trautmann, D. J. Cookson, K. Nordlund, and M. Toulemonde

Phys. Rev. Lett. 101, 175503 – Published 24 October 2008

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Fine Structure in Swift Heavy Ion Tracks in Amorphous ${SiO}_{2}$