| Budget Amount *help |
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2014: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2013: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2012: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2011: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
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| Outline of Final Research Achievements |
Water radiolysis is closely related to not only chemistry in reactor water, but also corrosion of vessels and structural materials, nuclide migration in geological disposal and solvent extraction in spent fuel reprocessing (nuclear water chemistry), where their real solutions are suspensions of aqueous solutions mixed with another phases of gases, solids and liquids (heterogeneous irradiation fields). The radiation-induced phenomena in the heterogeneous fields are so complicated and cannot be explained only by those in homogeneous aqueous solutions.
In order to observe ultrahigh-speed reaction dynamics in such heterogeneous irradiation fields, optical systems of reflectance spectroscopy were newly introduced to ns-pulse radiolysis system with electron LINAC, and then provided the prospects for the observation. The chemical states of aqueous suspensions were also clarified through surface/electrochemical measurements and radiolysis experiments with pulsed/steady-state irradiations.
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