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In situ Resonant Ultrasound Spectroscopy during irradiation of solids with relativistic heavy ions

Alencar, Igor and Haussühl, Eiken and Winkler, Björn and Trautmann, Christina and Schuster, Beatrice and Severin, Daniel (2015):
In situ Resonant Ultrasound Spectroscopy during irradiation of solids with relativistic heavy ions.
In: Acta Materialia, Pergamon-Elsevier Science Ltd, Oxford, England, pp. 60-72, 89, ISSN 13596454, [Online-Edition: http://dx.doi.org/10.1016/j.actamat.2015.01.031],
[Article]

Abstract

Samples of steel, fused silica, CaF2, NaCl, and a (La,Eu)PO4 monazite ceramic were irradiated with Bi-209 (130 GeV) and U-238 (60 GeV) ions up to total fluences of 6 x 10(11) cm(-2). During beam exposure, resonant ultrasound spectra were recorded. No radiation-induced changes in the density and elastic stiffness coefficients were observed when comparing samples before and after irradiation. The irradiation caused fully reversible shifts of the resonance frequencies in all samples except NaCl, silica and monazite irradiated with U ions. These reversible shifts are due to a temperature increase during irradiation. The heating process was modelled quantitatively by an energy balance model. The average thickness traversed by the ions was estimated from geometrical considerations and the energy deposition was calculated with the SRIM software. The results from the model and these calculations are in good agreement. For NaCl, silica and monazite, a degradation of the samples was observed. Hence, in situ Resonant Ultrasound Spectroscopy can be used to monitor sample integrity and temperatures in harsh radiation environments. (C) 2015 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

Item Type: Article
Erschienen: 2015
Creators: Alencar, Igor and Haussühl, Eiken and Winkler, Björn and Trautmann, Christina and Schuster, Beatrice and Severin, Daniel
Title: In situ Resonant Ultrasound Spectroscopy during irradiation of solids with relativistic heavy ions
Language: English
Abstract:

Samples of steel, fused silica, CaF2, NaCl, and a (La,Eu)PO4 monazite ceramic were irradiated with Bi-209 (130 GeV) and U-238 (60 GeV) ions up to total fluences of 6 x 10(11) cm(-2). During beam exposure, resonant ultrasound spectra were recorded. No radiation-induced changes in the density and elastic stiffness coefficients were observed when comparing samples before and after irradiation. The irradiation caused fully reversible shifts of the resonance frequencies in all samples except NaCl, silica and monazite irradiated with U ions. These reversible shifts are due to a temperature increase during irradiation. The heating process was modelled quantitatively by an energy balance model. The average thickness traversed by the ions was estimated from geometrical considerations and the energy deposition was calculated with the SRIM software. The results from the model and these calculations are in good agreement. For NaCl, silica and monazite, a degradation of the samples was observed. Hence, in situ Resonant Ultrasound Spectroscopy can be used to monitor sample integrity and temperatures in harsh radiation environments. (C) 2015 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

Journal or Publication Title: Acta Materialia
Volume: 89
Publisher: Pergamon-Elsevier Science Ltd, Oxford, England
Uncontrolled Keywords: Radiation effets in solids, Resonant Ultrasound Spectroscopy, Swift ion damage, Elasticity
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: 29 Feb 2016 13:49
Official URL: http://dx.doi.org/10.1016/j.actamat.2015.01.031
Identification Number: doi:10.1016/j.actamat.2015.01.031
Funders: Financial support from German Federal Ministry of Education and Research (BMBF, projects 02NUK019E and 02NUK021F) is gratefully acknowledged., I.A. acknowledges Brazilian National Council for Scientific and Technological Development (CNPq, project 237039/2012-5) for a post-doctoral fellowship and E.H. wishes to thank German Research Foundation (DFG, project HA5137/3) for financial support.
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