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Ion Beam Irradiation Induced Structural Modifications in Iron Phosphate Glasses: A Model System for Understanding Radiation Damage in Nuclear Waste Glasses

Published online by Cambridge University Press:  03 March 2015

Amy S. Gandy ,
Martin C. Stennett ,
Clive Brigden  and
Neil C. Hyatt
Amy S. Gandy
Affiliation:
Immobilisation Science Laboratory, Department of Materials Science and Engineering, The University of Sheffield, Mappin Street, Sheffield S1 3JD, UK
Martin C. Stennett
Affiliation:
Immobilisation Science Laboratory, Department of Materials Science and Engineering, The University of Sheffield, Mappin Street, Sheffield S1 3JD, UK
Clive Brigden
Affiliation:
Immobilisation Science Laboratory, Department of Materials Science and Engineering, The University of Sheffield, Mappin Street, Sheffield S1 3JD, UK
Neil C. Hyatt
Affiliation:
Immobilisation Science Laboratory, Department of Materials Science and Engineering, The University of Sheffield, Mappin Street, Sheffield S1 3JD, UK
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Abstract

Fe K-edge X-ray absorption spectroscopy (XAS) was applied to study the structural response of iron phosphate glasses to atomic displacements arising from ion beam irradiation, as an analogue of α-recoil damage arising from actinide immobilization. Analysis of XAS spectra demonstrated reduction of Fe3+ to Fe2+ as a consequence of 2 MeV Kr+ and 2 MeV Au+ implantation to a fluence of 2 x 1016 ions / cm2 and 5 x 1015 ions / cm2, respectively.

Keywords

ion-beam processingnuclear materialsamorphous

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Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1757: Symposium UU – Structure-Property Relations in Amorphous Solids , 2015 , mrsf14-1757-uu10-19
Copyright
Copyright © Materials Research Society 2015 

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References

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