[2F10-13] Fuel Debris 6

[2F11] Development of ultramicro analysis technology for fuel debris analysis

(23) Mössbauer and XRD analyses of simulated fuel debris (II)

*Yoshiya Homma¹, Hiroyuki Kazama², Katsuya Suzuki¹, Satoru Matsuo¹, Kenta Yoshida¹, Atsushi Ouchi³, Yusuke Miura³, Toru Higuchi³, Kenji Konashi¹, Yasuyoshi Nagai¹ (1. Tohoku University, 2. JAEA, 3. NFD)

Keywords:simulated debris, Mössbauer spectroscopy, X-ray diffraction (XRD)

In the debris of the melted down Fukushima Daiichi Nuclear Power Plant, a considerable amount of stainless steel of the pressure vessel and zirconium alloy of the fuel cladding tube could be dissolved in addition to the nuclear fuel. Mössbauer spectroscopy, powder X-ray diffraction, and SEM were applied to the simulated debris prepared in an oxidizing atmosphere to clarify the existence form of the fuel matrix and Iron.