Feasibility of classification of clay minerals by using PAS

11th International Workshop on Positron and Positronium Chemistry

物理学;化学

Honda, Y.^1 ; Yoshida, Y.^2 ; Akiyama, Y.^2 ; Nishijima, S.^2

Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka

567-0047, Japan^1

Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka

565-0871, Japan^2

关键词: Extraction rate;    Positron annihilation spectroscopy (PAS);   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/618/1/012037/pdf
DOI  :  10.1088/1742-6596/618/1/012037

来源: IOP

【 摘 要 】

After the nuclear power plant disaster, the evaluation of radioactive Cs kept in soil, especially in clay minerals and the elucidation of its movement are urgent subjects to promote decontamination. It is known that the extractable level of Cs depends on the sort of clay minerals. We tried to find the characteristics of clay minerals belonging to phillosilicate group using positron annihilation spectroscopy (PAS) and the relationship between the results of PAS and the amounts of substantially extracted Cs from the clay minerals. The results showed that each clay mineral was found to be distinguishable from other clay minerals by PAS and the extraction rate of Cs was different among those clay minerals, however the direct correlation between the results of PAS and the extraction rates of Cs was not found.