[3E09-11] Radiolysis 2

[3E10] Radiolysis Studies on H₂ Retention with Changing Hydrophilicity of Carbonate Slurry

(2)Pulse Radiolysis Measurement of Local Viscosity of Pore Water

*Ryuji Nagaishi¹, Masao Gohdo², Ryo Kuwano¹, Tatsuya Ito¹, Yoichi Yoshida², Ryoya Tamaki² (1. JAEA, 2. Osaka Univ.)

Keywords:Carbonate Slurry, Pore Water, Viscosity, Pulse Radiolysis, Reaction Rate

Hydrogen molecules (H₂) retained by highly viscous suspension such as a carbonate slurry exist in the pore water of suspension in the form of gas (bubble). The H₂ behaviors such as the reaction of dissolved species of H₂ and the process forming H₂ bubble are mainly determined by the viscosity of pore water, while the H₂ retention by the macroscopic viscosity of suspension. Such local (partial) viscosity is generally unclear. In order to clarify the H₂ 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_aq^-) 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.