[2J09-14] Irradiation Effect

[2J09] Stability and growth of radiation defects influenced by cascade damage at different fluxes

*Dongyue Chen¹, Kenta Murakami¹, Huilong Yang¹, Hiroaki Abe¹, Naoto Sekimura¹ (1. The University of Tokyo)

Keywords:Flux effects, Combined irradiation, Cascade damage, Defect stability

Flux effect is always a big concern when acceleration experiments are designed to test material ageing process. Combined irradiation was found to be a promising method to study flux effects, via which defects are created in the first irradiation, and the change of those defects is directly compared before and after the second irradiation using TEM foil specimens. When the second irradiation was performed at high temperature, as we did in our previous study, point defect diffusion at different fluxes was focused on. In this work, the second irradiation was performed at room temperature, which limited point defect diffusion and focused more on the cascade damage at different fluxes. The stability or growth of the defects during the second irradiation was quantitatively analyzed and discussed.