Speaker
Description
Fission product behaviors of Cs, a major element released in a severe nuclear accident, still remain unclear. The question frequently addressed is whether Cs released will be in the form of CsMoO$_4$ or CsOH. This is a challenging issue since it has been demonstrated that the reaction between CsMoO$_4$ and water leading to CsOH production is thermodynamically favored. The present research aims at investigation of CsOH generation through this chemical channel. A high-temperature setup with a flow system based on the cooling system of a water-cooled nuclear reactor has been assembled. The reaction between aqueous solutions of CsI and NaMoO$_4$ in a high-corrosion-resistant hot cell (Hastelloy) has been studied up to 80$^o$C both in air and deoxygenated system. The products have been characterized using XRD and FTIR.
