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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.

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Volltext §
DOI: 10.5445/IR/1000064083
Originalveröffentlichung
DOI: 10.1016/j.nme.2016.07.007
Scopus
Zitationen: 5
Zugehörige Institution(en) am KIT Institut für Angewandte Materialien - Werkstoff- und Biomechanik (IAM-WBM)
Institut für Angewandte Materialien - Angewandte Werkstoffphysik (IAM-AWP)
Publikationstyp Zeitschriftenaufsatz
Jahr 2016
Sprache Englisch
Identifikator ISSN: 2352-1791
urn:nbn:de:swb:90-640833
KITopen-ID: 1000064083
HGF-Programm 31.03.06 (POF III, LK 01)
Erschienen in Nuclear materials and energy
Band 9
Seiten 207-215
Nachgewiesen in Scopus
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