[2L01-07] Technology for Fuel Debris Analysis

10:15 AM - 10:30 AM JST(1:15 AM - 1:30 AM UTC)

[2L02] Development of ultramicro analysis technology for fuel debris analysis(27) Characterization of microstructures in a simulated debris using AC-TEM (Ⅱ)

*Kenta Yoshida¹, Satoru Matsuo¹, Hiroyuki Kazama², Yoshiya Homma¹, Kenji Konashi¹, Yasuyoshi Nagai¹, Yusuke Miura³, Toru Higuchi³ (1. Tohoku University, 2. Osaka University, 3. NFD)

Keywords:

Simulated fuel debris,(Zr,U)O2,TEM

The distribution of Fe atoms in simulated fuel debris and the microstructure of two types of Fe-containing (U, Zr)O₂ simulated fuel debris fired in oxidising and reducing atmospheres were investigated using spherical aberration corrected transmission electron microscopy (AC-TEM) in order to obtain the structural and compositional information necessary for estimating the temperature and atmosphere during the generation of fuel debris.