Damage and Deuterium Retention of Beryllium Due to Low Energy Deuterium Ion Irradiation

Naoaki Yoshida; Shuji Mizusawa; Ryuichi Sakamoto; Takeo Muroga

doi:dx.doi.org/10.13182/FST96-A11963034

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Damage and Deuterium Retention of Beryllium Due to Low Energy Deuterium Ion Irradiation

Naoaki Yoshida, Shuji Mizusawa, Ryuichi Sakamoto, Takeo Muroga

Fusion Science and Technology / Volume 30 / Number 3P2A / December 1996 / Pages 798-801

Plasma-Facing Components: Analysis and Technology / dx.doi.org/10.13182/FST96-A11963034

Published:February 8, 2018

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Thermal desorption of deuterium(D) from 8-keV D-ion irradiated beryllium(Be) above room temperature was correlated with microstructural changes during irradiation and annealing to understand the underlying mechanism of retention and trapping of D. D bubbles are formed at all examined temperatures between 300K and 873K. Large roundish bubbles above 200nm are especially formed above 573K. They remain even after annealing up to 973K. Strong retention of D by the bubbles occurs for the irradiation up to 673K.