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RESEARCH PRODUCT

Effects of external energetic factors on tritium release from the EXOTIC 8-3/13 neutron-irradiated beryllium pebbles

Sarmīte KalējaElīna KolodinskaGunta ĶIzāneVija TīlikaBroņislavs LeščinskisJuris TīliksAigars Vītiņš

subject

Materials scienceMechanical EngineeringRadiochemistrychemistry.chemical_elementBlanketFusion powerNuclear physicsNuclear Energy and EngineeringchemistryAgglomerateGeneral Materials ScienceNeutronTritiumIrradiationBerylliumHeliumCivil and Structural Engineering

description

Abstract Tritium release from samples of 9–13 mg of the EXOTIC 8-3/13 neutron-irradiated beryllium pebbles under the separate and simultaneous action of temperature 490–770 K, 5 MeV fast-electron radiation 14 MGy h−1 for 3 h and magnetic field (MF) of 1.7 T was investigated. The pebbles were found to be very dissimilar with respect to their total tritium content—2.5–9 MBq g−1. The batch contained also some coarse agglomerates of the pebbles containing 10–19 MBq g−1 of tritium having also a high tritium release. For the pebbles having the total tritium 2.5–5.3 MBq g−1, the electron radiation for 3 h caused the fractional tritium release 17–26% (B = 0) and 21–29% (B = 1.7 T), the temperature of the pebbles being

yearjournalcountryeditionlanguage
2009-06-01Fusion Engineering and Design
https://doi.org/10.1016/j.fusengdes.2009.01.032