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Effect of combined local variations in elastic and inelastic energy losses on the morphology of tracks in ion-irradiated materials

Abstract : Detailed analysis of the morphology of latent tracks created by swift heavy ions from the surface entry point on a pyrochlore crystal to the end of the ion trajectory reveals continuous changes in the track diameter as a function of ion deceleration, loss of track parallelism beyond a certain depth and the evolution from continuous to discontinuous tracks. The tracks exhibit a layered structure composed of a non-crystalline core surrounded by a strained crystalline envelope. Furthermore, surprising local increases in the diameter of the latent tracks are readily observed. This feature can be interpreted using a model based on the concept of effective local energy deposition, defined as the sum of the inelastic energy deposited by the swift track-forming ion and the elastic energy deposited by a primary knock-on atom inside the ion track. (C) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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Contributor : Christine Hadrossek <>
Submitted on : Tuesday, August 20, 2013 - 11:08:26 AM
Last modification on : Wednesday, September 15, 2021 - 3:00:02 PM

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I. Jozwik-Biala, J. Jagielski, B. Arey, L. Kovarik, G. Sattonnay, et al.. Effect of combined local variations in elastic and inelastic energy losses on the morphology of tracks in ion-irradiated materials. Acta Materialia, Elsevier, 2013, 61, pp.4669-4675. ⟨10.1016/j.actamat.2013.04.037⟩. ⟨in2p3-00852197⟩

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