The heat flux and temperature distribution of W fuzz layers under fusion-relevant He/D ion irradiations
Source abstract
Abstract
Abstract The thermal diffusion of nanostructured W fuzz layers formed over W divertor targets due to fusion-relevant He+ irradiations remain unclear so far. By analyzing the collision process of energetic He+ and D+ ions in the fuzz layers, we have calculated the temperature distribution and heat flux of fuzz layers under low-energy (10–200 eV) and high-flux (1022–1025/m2⋅s) He+/D+ irradiations. Both the heat flux of fuzz layers and the temperature difference ( Δ T ) between the top and bottom of fuzz layers are determined by the radius of W nanofibers, the thickness of fuzz layers, and the heat load over W targets. Our simulation predicts that under fusion-relevant He+/D+ irradiations at the energy of Δ T is lower than 35 K when the heat load over the divertor varies in the range of
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Fusion materials and technologies · Nuclear Materials and Properties · Laser-Plasma Interactions and Diagnostics
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References (21)
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