Radiation-Damaged Tungsten: Production and Study in a Steady-State Plasma Flux
| Autor: | S.N. Kornienko, A.M. Muksunov, V.G. Stolyarova, V. N. Unezhev, E.V. Semenov, S. T. Latushkin, B.I. Khripunov, V. S. Koidan, V.M. Gureev, A.I. Ryazanov |
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| Rok vydání: | 2018 |
| Předmět: |
Physics
Nuclear and High Energy Physics Radiochemistry technology industry and agriculture chemistry.chemical_element Plasma Tungsten Fusion power equipment and supplies 01 natural sciences Fluence Atomic and Molecular Physics and Optics 010305 fluids & plasmas Ion chemistry Deuterium 0103 physical sciences Radiation damage Irradiation 010306 general physics |
| Zdroj: | Physics of Atomic Nuclei. 81:1015-1023 |
| ISSN: | 1562-692X 1063-7788 |
| Popis: | The effect of deuterium plasma on tungsten with high levels of radiation damage was studied experimentally. Tungsten was examined as a candidate plasma-facing material for a fusion reactor. The effect of damage accumulation in a material irradiated with fusion neutrons was simulated using high-energy ions. Primary radiation defects of 1–100 dpa were produced in tungsten irradiated with He2+ and C3+ ions accelerated to 3–10 MeV in the cyclotron at the Kurchatov Institute with a fluence of 1017–1019 ion/cm2. The irradiated material was exposed to deuterium plasma at the LENTA linear plasma facility operated in the continuous regime and providing a plasma flux of 1021–1022 D/cm2. The erosion dynamics, the development of surface microstructure, and the accumulation of deuterium in tungsten were studied. Enhanced retention of deuterium was observed in the samples damaged both by helium and carbon ions at room temperature (ERDA). The effect of deuterium retention was suppressed in the damaged tungsten samples processed at a temperature of 500°C. |
| Databáze: | OpenAIRE |
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