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Nanoscale density fluctuations in swift heavy ion irradiated amorphous SiO2

Kluth, P; Pakarinen, O. H; Djurabekova, Flyura; Giulian, R; Ridgway, M. C; Byrne, A. P; Nordlund, K


We report on the observation of nanoscale density fluctuations in 2 μm thick amorphous SiO₂ layers irradiated with 185 MeV Au ions. At high fluences, in excess of approximately 5 × 10¹² ions/cm², where the surface is completely covered by ion tracks, synchrotron small angle x-ray scattering measurements reveal the existence of a steady state of density fluctuations. In agreement with molecular dynamics simulations, this steady state is consistent with an ion track “annihilation” process, where...[Show more]

CollectionsANU Research Publications
Date published: 2011-11-23
Type: Journal article
Source: Journal of Applied Physics
DOI: 10.1063/1.3671614


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