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Calculations of the tritium re-emission rate in the DEMO first wall

TitleCalculations of the tritium re-emission rate in the DEMO first wall
Publication TypeArticolo su Rivista peer-reviewed
Year of Publication1999
AuthorsOgorodnikova, O.V., Fütterer M.A., Serra Emanuele, and Benamati G.
JournalJournal of Nuclear Materials
Volume270
Pagination368-371
ISSN00223115
Keywordsdeuterium, Neutron irradiation, Plasma confinement, Plasma facing materials, Radiation damage, Surface phenomena, Surface recombination, Thermal effects, TOKAMAK DEVICES, tritium
Abstract

Total recycling in controlled fusion by magnetic confinement consists of two processes: reflection of implanted H isotopes from the first wall and re-emission due to surface recombination. D and tritium re-emission fluxes in the DEMO reactor were calculated considering the influence of first wall temperature (FWT), surface conditions and trapping in neutron-produced defects. The increase in the sticking coefficient and the reduction of FWT both reduce the recycling time, while trapping can increase the recycling time to more than double. The decrease in FWT, in turn reduces the permeation flux and inventory because of the increase in the front recombination coefficient.

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URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-0345633616&doi=10.1016%2fS0022-3115%2899%2900013-6&partnerID=40&md5=dd6f8de183d415b01af12972161974c9
DOI10.1016/S0022-3115(99)00013-6
Citation KeyOgorodnikova1999368