A study of helium bubble production in 10 keV He^sup +^ irradiated tungsten

Helium bubble production in tungsten has been studied combining transmission electron microscopy and in situ irradiations with 10 keV He+ ions. The irradiations were carried out at four temperatures (773 K, 1073 K, 1273 K, 1473 K), and were held at intervals of (0.45; 0.9; 1.2; 1.5) × 1020 He+/m2 fo...

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Bibliographic Details
Published in:Fusion engineering and design 2017-12, Vol.125, p.454
Main Authors: Yi, Xiaoou, Arakawa, Kazuto, Nguyen-Manh, Duc, Ferroni, Francesco, Liu, Pingping, Han, Wentuo, Wan, Farong, Roberts, Steven G
Format: Article
Language:English
Subjects:
Bubbles
Correlation analysis
Helium
Irradiation
Studies
Temperature distribution
Transmission electron microscopy
Tungsten
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Summary:Helium bubble production in tungsten has been studied combining transmission electron microscopy and in situ irradiations with 10 keV He+ ions. The irradiations were carried out at four temperatures (773 K, 1073 K, 1273 K, 1473 K), and were held at intervals of (0.45; 0.9; 1.2; 1.5) × 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.
ISSN:0920-3796
1873-7196