Distribution and behaviour of 233Pa in 2LiF–BeF2 molten salt
| Autor: | Zhongqi Zhao, Junxia Geng, Xiangzhou Cai, Zhiqiang Cheng, Qingnuan Li, Qiang Dou, Wenxin Li, Jifeng Hu, Jingen Chen |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
chemistry.chemical_classification
Nuclear fuel cycle Materials science Molten salt reactor General Chemical Engineering FLiBe Inorganic chemistry Thorium chemistry.chemical_element Salt (chemistry) General Chemistry 010501 environmental sciences 010403 inorganic & nuclear chemistry 01 natural sciences 0104 chemical sciences law.invention chemistry.chemical_compound chemistry law Deposition (phase transition) Nuclide Molten salt 0105 earth and related environmental sciences |
| Zdroj: | RSC Advances. 11:7436-7441 |
| ISSN: | 2046-2069 |
| DOI: | 10.1039/d0ra09572a |
| Popis: | Distribution and behavior of 233Pa, essential in the thorium–uranium nuclear fuel cycle, were studied in 2LiF–BeF2 (66 : 34 mole%, FLiBe) molten salt by γ-ray spectrometry. The experiments showed that 233Pa deposited slightly on the surface of graphite crucible. The addition of Hastelloy and metallic lithium decreased the 233Pa specific activity in the salt by 1 to 2 orders of magnitude rapidly. Analysis indicated that reductive deposition of 233Pa was responsible for the rapid decrease of 233Pa specific activity in the salt. Additional experiments strongly supported the mechanism of reductive deposition of 233Pa induced by Hastelloy and metallic lithium. In view of the large deposition of 233Pa on Hastelloy, the possible influence of fissile nuclide 233U produced from 233Pa decay on the operation of thorium-based molten salt reactor was discussed. |
| Databáze: | OpenAIRE |
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