Presentation Information

10:35 AM - 10:50 AM JST(1:35 AM - 1:50 AM UTC)

[1A05]Investigation of chemical state of uranium contained in borosilicate glass(3) Differences depending on the type of alkali oxide

*Takayuki Nagai¹, Yusuke Aoyama¹, Nanako Katsuoka¹, Yoshihiro Okamoto¹, Daisuke Akiyama², Nobuaki Sato², Akira Kirishima² (1. JAEA, 2. Tohoku Univ.)

Keywords:

Vitrification,Borosilicate glass,Uranium,XAFS,fluorescence emission measurement

The chemical state of uranium contained in the vitrified waste is being investigated using XAFS measurements. To confirm differences in the chemical state of uranium due to the raw glass composition, uranium glass was melted by adding Na₂U₂O₇ to borosilicate glass powders with varying alkali oxides (Li₂O, Na₂O, K₂O, Rb₂O). XAFS measurements and fluorescence emission measurements were performed on these uranium glasses to observe differences depending on the type of alkali oxide.

Back to Session information