Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6744272 | Fusion Engineering and Design | 2017 | 4 Pages |
Abstract
Helium bubble production in tungsten has been studied combining transmission electron microscopy and in situ irradiations with 10Â keV He+ ions. The irradiations were carried out at four temperatures (773Â K, 1073Â K, 1273Â K, 1473Â K), and were held at intervals of (0.45; 0.9; 1.2; 1.5)Â ÃÂ 1020 He+/m2 for each temperature. Based on detailed analyses of bubble size, population and spatial distributions, their correlations with irradiation temperature and helium fluence were established. Helium-to-vacancy ratios were also deduced from these data. During high temperature equilibrium, the ratio was close to 3.
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Authors
Xiaoou Yi, Kazuto Arakawa, Duc Nguyen-Manh, Francesco Ferroni, Pingping Liu, Wentuo Han, Farong Wan, Steven G Roberts,