Conical etched ion tracks in SiO2 characterised by small angle X-ray scattering

A. Hadley*, C. Notthoff, P. Mota-Santiago, U. H. Hossain, S. Mudie, M. E. Toimil-Molares, C. Trautmann, P. Kluth

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    3 Citations (Scopus)


    We present a systematic study of the evolution of chemically etched ion tracks formed in thermally grown a-SiO2 after irradiation with 1.1 GeV and 185 MeV Au ions. The irradiated material was subsequently etched with 2.5% hydrofluoric acid (HF) for different times yielding hollow conical shaped structures of various sizes. The characterisation of these structures was carried out by synchrotron-based small-angle X-ray scattering (SAXS) measurements, enabling the determination of the geometry and dimensions of the etched conical structures with sub-nanometre precision. The results indicate that the track etching behavior is influenced by the ion energy, and that at short etching times the latent track damage in the radial direction becomes significant.

    Original languageEnglish
    Pages (from-to)133-136
    Number of pages4
    JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
    Publication statusPublished - 15 Nov 2018


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