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Fine Structure in Swift Heavy Ion Tracks in Amorphous SiO2

Abstract : We report on the observation of a fine structure in ion tracks in amorphous SiO2 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.
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https://hal-cea.archives-ouvertes.fr/cea-00343820
Contributor : Chantal Brassy Connect in order to contact the contributor
Submitted on : Tuesday, December 2, 2008 - 7:15:36 PM
Last modification on : Thursday, October 21, 2021 - 4:15:36 AM

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  • HAL Id : cea-00343820, version 1

Citation

P. Kluth, C.S. Schnohr, O.H. Pakarinen, F. Djurabekova, D.J. Sprouster, et al.. Fine Structure in Swift Heavy Ion Tracks in Amorphous SiO2. Physical Review Letters, American Physical Society, 2008, 101, pp.175503. ⟨cea-00343820⟩

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