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Argonne research aims to improve nuclear fuel recycling and metal recovery
Servis
Scientists at Argonne National Laboratory are investigating a used nuclear fuel recycling technology that could lead to a scaled-down and more efficient approach to metal recovery, according to a recent news article from the lab. The research, led by Argonne radiochemist Anna Servis with funding from the Department of Energy’s Advanced Research Projects Agency–Energy (ARPA-E), could have an impact beyond the nuclear fuel cycle and improve other high-value metal processing, such as rare earth recovery, according to Argonne.
The research: Servis’s work is being carried out under ARPA-E’s CURIE (Converting UNF Radioisotopes Into Energy) program. The specific project—Radioisotope Capture Intensification Using Rotating Packed Bed Contactors—started in 2023 and is scheduled to end in January 2026.
F. N. Si, F. X. Chen, D. Wang
Fusion Science and Technology | Volume 78 | Number 6 | August 2022 | Pages 468-474
Technical Paper | doi.org/10.1080/15361055.2022.2049120
Articles are hosted by Taylor and Francis Online.
A backlighting system is developed for Z-pinch experiments that is composed of a pulsed X-ray generator (the backlighter), a scintillator, an optical module, and an intensified charge-coupled device (ICCD). By optimizing the geometrical layout, choosing the appropriate scintillator, and optimizing the parameters of the optical module, the system is successfully designed. The key properties of the system are theoretically calculated based on parameters of the X-rays and the scintillator. Calculation results of sensitivity show that the amount of scintillator fluorescence falls in the linear dynamic range of the ICCD. Spatial resolution is calculated to be 241 µm, which is mainly determined by the geometrical layout and the size of the X-ray focal spot. Temporal resolution is calculated to be 2.3 ns, which is mainly determined by the decay time of the scintillator. Calculation results indicate that the properties of the system meet the requirements of the Z-pinch capsule diagnostics. The system has been fabricated. Performance of the system is tested through static W wire experiments in the laboratory. Experimental results show that 250-µm W wire is clearly seen in the image when X-ray fluence is high, while 100-µm W wire cannot be seen.