[2E14-18] Evaluation of severe accident and Cs behavior

[2E16] Synthesis and characterization of cesium silicate Cs₂Si₄O₉

*Thi Mai Dung Do¹, I wayan Ngarayana¹, Hieu Duy Nguyen¹, Kenta Murakami¹, Hisayuki Suematsu¹, Manabu Koide³, Kunhisa Nakajima², Eriko Suzuki², Masahiko Osaka² (1. Nagaoka University of Technology, 2. Japan Atomic Energy Agency, 3. National Institute of Technology, Nagaoka College)

Keywords:cesium silicate, characteristics, structure

Cs₂Si₄O₉ powder was synthesized by a wet method using cesium carbonate powder and LUDOX(R) AS-40 colloidal silica 40 wt. % suspension in H₂O as starting materials. The characteristic of Cs₂Si₄O₉ was investigated by using X-ray diffraction, Raman, and thermogravimetry- differential scanning calorimetry. The structure of Cs₂Si₄O₉ was analyzed by transmission electron microscopy.