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retention with changing hydrophilicity of carbonate slurry, 2; Pulse radiolysis measurement of local (partial) viscosity of pore waterNagaishi, Ryuji; Kuwano, Ryo*; Ito, Tatsuya; Godo, Masao*; Yoshida, Yoichi*; Tamaki, Ryoya*
no journal, ,
Hydrogen molecules (H) retained by highly viscous suspension such as a carbonate slurry exist in the pore water of suspension in the form of gas (bubble). The H behaviors such as the reaction of dissolved species of H and the process forming H bubble are mainly determined by the viscosity of pore water, while the H retention by the macroscopic viscosity of suspension. Such local (partial) viscosity is generally unclear. In order to clarify the H retention/release mechanism in the suspension, it is important to estimate this viscosity. In this report as the second in a series of presentations, the reaction (decay) rate of hydrated electrons (e
) formed as a radiolysis radical of pore water was transiently measured by using ns-pulse radiolysis, and the viscosity of pore water was estimated for the current and hydrophilicity-lowered slurries to be compared with each other.
Ito, Tatsuya; Nagaishi, Ryuji; Kuwano, Ryo*; Godo, Masao*; Tamaki, Ryoya*
no journal, ,
The use of radiation-resistant resins becomes increasing as vessels for irradiation experiments. Polyimide (Kapton) was used on surfaces in contact with water in our radiolysis experiments, but the obtained results were not same to that when glass vials were used. In this study, to investigate the effect of resin on water radiolysis, the amounts of dichromate reduction and HO formation after gamma-irradiation were compared in the presence or absence of resin in the aqueous solutions. The presence of resins increased the reduction but hardly changed the formation. Therefore, the reduction caused by radiolysis in aqueous solution was suggested to be promoted by the presence of resins. The promotion was further studied using pulse radiolysis, etc.