ICP-MS measurement of diffusion coefficients of Cs in NBG-18 graphite
Source abstract
Abstract
Abstract Graphite is used in the HGTR/VHTR as moderator and it also functions as a barrier to fission product release. Therefore, an elucidation of transport of fission products in reactor-grade graphite is required. We have measured diffusion coefficients of Cs in graphite NBG-18 using the release method, wherein we infused spheres of NBG-18 with Cs and measured the release rates in the temperature range of 1090–1395 K. We have obtained: D C s , N B G − 18 = ( 1.0 × 10 − 7 m 2 / s ) exp ( − 1.23 × 10 5 J / m o l RT ) These seem to be the first reported values of Cs diffusion coefficients in NBG-18. The values are lower than those reported for other graphites in the literature.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Graphite, nuclear technology, radiation studies · Nuclear and radioactivity studies · Nuclear reactor physics and engineering
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References (19)
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