[2B01-05] Decommissioning of Fukushima Daiichi NPP 1

[2B02] Development of ultramicro analysis technology for fuel debris analysis

(10) Mössbauer and XRD analysis of simulated fuel debris.

*Yoshiya Homma¹, Hiroyuki Kazama², Katsuya Suzuki¹, Satoru Matsuo¹, Kenta Yoshida¹, Atsushi Ohuchi³, Yusuke Miura³, Toru Higuchi³, Kenji Konashi¹, Yasuyoshi Nagai¹ (1. Tohoku Univ., 2. JAEA, 3. NFD)

Keywords:simulated fuel debris, Mössbauer Spectroscopy, x-ray diffraction (XRD), scanning electron microscope (SEM)

It is thought that the stainless steel of pressure vessels and the zirconium alloy of nuclear fuel tube melt into the fuel debris at Fukushima Daiichi nuclear power plant. We investigated existence form of iron and zirconium in the simulated fuel debris by using Mössbauer spectroscopy , XRD and SEM analysis.