Fission product retention of fuelled beryllium oxide spheres and urania-thoria fuel particles in post-irradiation annealing experiments.

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dc.contributor.authorRoman, Den_AU
dc.contributor.authorRandall, CHen_AU
dc.contributor.authorHanna, GLen_AU
dc.date.accessioned2007-11-22T04:21:27Zen_AU
dc.date.accessioned2010-04-30T04:30:22Zen_AU
dc.date.available2007-11-22T04:21:27Zen_AU
dc.date.available2010-04-30T04:30:22Zen_AU
dc.date.issued1969-12en_AU
dc.description.abstractThe post-activation diffusion technique has been used to measure the release of Xe-133 from beryllium oxide based, spherical fuel elements and the urania-thoria fuel particles from which they were prepared. Release rate parameters (apparent diffusion coefficients, D') for bare fuel particles were of the order 10-8 sec-1 to 10-10 sec-1 at 1400ºC, whereas most spheres tested gave parameters of 10-16 sec-1 or less, indicating that the beryllia matrix and cladding were having a marked effect in retaining fission gases. Mid-anneal changes in release rates from bare fuel particles were observed at 1200ºC and 1400ºC, This behaviour is tentatively attributed to slight pore growth and the release of trapped gas from pores which open to the surface during annealing.en_AU
dc.identifier.citationRoman, D., Randall, Ch. H., & Hanna, G. L. (1969). Fission product retention of fuelled beryllium oxide spheres and urania-thoria fuel particles in post-irradiation annealing experiments. (AAEC/E201). Lucas Heights, NSW: Australian Atomic Energy Commissionen_AU
dc.identifier.govdoc216en_AU
dc.identifier.otherAAEC-E-201en_AU
dc.identifier.placeofpublicationLucas Heights, New South Walesen_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/389en_AU
dc.language.isoen_auen_AU
dc.publisherAustralian Atomic Energy Commissionen_AU
dc.subjectAnnealingen_AU
dc.subjectBeryllium oxidesen_AU
dc.subjectSpheresen_AU
dc.subjectFuel particlesen_AU
dc.subjectPost-irradiation examinationen_AU
dc.subjectUraniumen_AU
dc.subjectThoriumen_AU
dc.titleFission product retention of fuelled beryllium oxide spheres and urania-thoria fuel particles in post-irradiation annealing experiments.en_AU
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