Publications by authors named "Joseph R Wilbanks"
Article Synopsis
- Technetium poses challenges in radioactive waste management due to its mobility and behavior during fuel reprocessing, often appearing as the pertechnetate anion (TcO).
- A new method involves using diaminoguanidine (DAG) to manage TcO and control redox processes, but its stability under radiation during reprocessing is still uncertain.
- Research shows that DAG degrades rapidly when exposed to gamma irradiation, particularly in acidic solutions, and reacts significantly with reactive species like hydroxyl radicals and nitrous acid, suggesting that its oxidation is the main degradation pathway in radiative environments.
Corrosion of aluminium alloy clad nuclear fuel, during reactor operation and under subsequent wet storage conditions, promotes the formation of aluminium hydroxide and oxyhydroxide layers. These hydrated mineral phases and the chemisorbed and physisorbed waters on their surfaces are susceptible to radiation-induced processes that yield molecular hydrogen gas (H), which has the potential to complicate the long-term storage and disposal of aluminium clad nuclear fuel through flammable and explosive gas mixture formation, alloy embrittlement, and pressurization. Here, we present a systematic study of the radiolytic formation of H from aluminium alloy 1100 (AA1100) and 6061 (AA6061) coupons in "dry" (~0% relative humidity) and "wet" (50% relative humidity) helium environments.
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