Sodium Diffusion in the Nuclear Waste Glass GP 98/12 |
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| Authors: | Michael P. Thomas Hj. Matzke |
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| Affiliation: | Alcan International Limited, Banbury Laboratories, Oxon, OX 16 7 SP England;Commission of the European Communities, Joint Research Centre, Karlsruhe Establishment, European Institute for Transuranium Elements, D-7500 Karlsruhe, Federal Republic of Germany |
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| Abstract: | The diffusion of22 Na was measured in the nuclear waste borosilicate glass GP 98/12 in the temperature range of 350° to 450°C. The boundary condition of a thin initial tracer layer and serial sectioning were employed to measure the diffusion profiles. The activation enthalpy was found to be 1.08 eV. A parallel experiment with the base glass VG 98/12 not containing added (chemically simulated, inactive) waste showed that Na diffusion does not vary significantly when adding the waste. |
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| Keywords: | nuclear materials glass sodium diffusion borosilicates |
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