[1I07-12] FP behavior

[1I09] Fundamental Research on Fission Product Chemistry

(3)Effect of atmosphere on the vaporization behavior of CsFeSiO₄

*Eriko Suzuki¹, Kunihisa Nakajima¹, Masahiko Osaka¹ (1. Japan Atomic Energy Agency)

Keywords:Cs compound, Vaporization, Effect of atmosphere

In severe accident condition, CsFeSiO₄ could be formed by Cesium(Cs) chemisorption onto reactor structural materials. For evaluation of re-vaporization behavior, effect of atmosphere on the vaporization behavior of CsFeSiO₄ at high temperature was investigated by TG-DTA experiments. As a result, it was found that vaporization of CsFeSiO₄ in atmosphere containing H₂ was promoted more than those in air and in Ar(inert) atmosphere.