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Confinement Effects of Ion Tracks in Ultrathin Polymer Films

Papaléo, R. M. and Thomaz, R. and Gutierres, L. I. and de Menezes, V. M. and Severin, D. and Trautmann, C. and Tramontina, D. and Bringa, E. M. and Grande, P. L. (2015):
Confinement Effects of Ion Tracks in Ultrathin Polymer Films.
In: Physical Review Letters, APS Publications, p. 118302, 114, (11), ISSN 0031-9007, [Online-Edition: http://dx.doi.org/10.1103/PhysRevLett.114.118302],
[Article]

Abstract

We show direct experimental evidence that radiation effects produced by single MeV heavy ions on a polymer surface are weakened when the length of the ion track in the material is confined into layers of a few tens of nanometers. Deviation from the bulk (thick film) behavior of ion-induced craters starts at a critical thickness as large as ∼40  nm, due to suppression of long-range additive effects of excited atoms along the track. Good agreement was found between the experimental results, molecular dynamic simulations, and an analytical model.

Item Type: Article
Erschienen: 2015
Creators: Papaléo, R. M. and Thomaz, R. and Gutierres, L. I. and de Menezes, V. M. and Severin, D. and Trautmann, C. and Tramontina, D. and Bringa, E. M. and Grande, P. L.
Title: Confinement Effects of Ion Tracks in Ultrathin Polymer Films
Language: English
Abstract:

We show direct experimental evidence that radiation effects produced by single MeV heavy ions on a polymer surface are weakened when the length of the ion track in the material is confined into layers of a few tens of nanometers. Deviation from the bulk (thick film) behavior of ion-induced craters starts at a critical thickness as large as ∼40  nm, due to suppression of long-range additive effects of excited atoms along the track. Good agreement was found between the experimental results, molecular dynamic simulations, and an analytical model.

Journal or Publication Title: Physical Review Letters
Volume: 114
Number: 11
Publisher: APS Publications
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Ion-Beam-Modified Materials
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 02 Jul 2015 08:32
Official URL: http://dx.doi.org/10.1103/PhysRevLett.114.118302
Identification Number: doi:10.1103/PhysRevLett.114.118302
Funders: The agencies FAPERGS, CAPES, and CNPq (Brazil), DAAD (Germany), and CONICET (Argentina) are acknowledged for financial support.
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