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Tritium and helium release from beryllium pebbles neutron-irradiated up to 230appm tritium and 3000appm helium

Chakin, V.; Rolli, R.; Vladimirov, P.; Moeslang, A.

Abstract:
Study of tritium and helium release from beryllium pebbles with diameters of 0.5 and 1 mm after high- dose neutron irradiation at temperatures of 6 86–96 8 K was performed. The release rate always has a single peak, and the peak temperatures at heating rates of 0.017 K/s and 0.117 K/s lie in the range of 1100–1350 K for both tritium and helium release. The total tritium release from 1 mm pebbles decreases considerably by increasing the irradiation temperature. The total tritium release from 0.5 mm pebbles is less than that from 1 mm pebbles and remains constant regardless of the irradiation temperature. At high irradiation temperatures, open channels are formed which contribute to the enhanced tritium release.


Zugehörige Institution(en) am KIT Institut für Angewandte Materialien - Angewandte Werkstoffphysik (IAM-AWP)
Institut für Angewandte Materialien - Werkstoff- und Biomechanik (IAM-WBM)
Publikationstyp Zeitschriftenaufsatz
Jahr 2016
Sprache Englisch
Identifikator DOI: 10.1016/j.nme.2016.07.007
ISSN: 2352-1791
URN: urn:nbn:de:swb:90-640833
KITopen ID: 1000064083
HGF-Programm 31.03.06; LK 01
Erschienen in Nuclear materials and energy
Band 9
Seiten 207-215
Lizenz CC BY 4.0: Creative Commons Namensnennung 4.0 International
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