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Characterization of High-Level Nuclear Waste Glass Using Magnetic Measurements

Published online by Cambridge University Press:  25 February 2011

Frank E. Senftle ,
Arthur N. Thorpe ,
Julius R. Grant  and
Aaron Barkatt
Frank E. Senftle
Affiliation:
Department of Physics, Howard University, Washington, DC 20059
Arthur N. Thorpe
Affiliation:
Department of Physics, Howard University, Washington, DC 20059
Julius R. Grant
Affiliation:
Department of Physics, Howard University, Washington, DC 20059
Aaron Barkatt
Affiliation:
Department of Chemistry, The Catholic University of America, Washington, DC 20064
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Abstract

Magnetic measurements constitute a promising method for the characterization of nuclear waste glasses in view of their simplicity and small sample weight requirements.

Initial studies of simulated high-level waste glasses show that the Curie constant is generally a useful indicator of the Fe2+:Fe3+ ratio. Glasses produced by air-cooling in large vessels show systematic deviations between experimental and calculated values, which are indicative of the presence of small amounts of crystalline iron-containing phases. Most of the iron in these phases becomes dissolved in the glass upon re-heating and more rapid quenching. The studies further show that upon leaching the glass in water some of the iron in the surface regions of the glass is converted to a form which has high temperature-independent magnetic susceptibility.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 333: Symposium V – Scientific Basis for Nuclear Waste Management XVII , 1993 , 455
Copyright
Copyright © Materials Research Society 1994

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References

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