[2C01-07] Irradiation Effect 1

[2C03] Microstructural change of fluorite-type oxides under synergistic irradiation with swift heavy ions and electrons

*Hiroki Tomonaka¹, Ayaka Maruo¹, Kazuhiro Yasuda¹, Syo Matsumura¹, Norito Ishikawa², Jean-Marc Costantini³ (1. Kyushu Univ., 2. JAEA, 3. CEA-Saclay)

Keywords:Combined irradiation, Nuclear material, Transmission Electron Microscope, Electronic excitation, Displacement damage

In order to realize highly efficient and safe nuclear power generation, the development of fuels and materials with excellent radiation resistance is important. It is important to clarify the superimposed irradiation effects and microstructure development by different energy and quality radiation in the environment where nuclear reactors and waste materials are used, in order to develop the next generation fuels and materials. In this study, we prepared samples of cerium dioxide, which is a mock-up of uranium dioxide, and observed the microstructural development of irradiated samples by “in-situ” electron irradiation using electron microscopy (200-1250 keV).