Transient release of radioactive iodine from the fission of UF4 in 2LiF–BeF2 salt
| Autor: | Wenxin Li, Jifeng Hu, Qingnuan Li, Zhongqi Zhao, Zhiqiang Cheng, Junxia Geng, Xiangzhou Cai, Haiying Fu, Qiang Dou, Jingen Chen |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
chemistry.chemical_classification
Nuclear fission product Fission products Molten salt reactor Fission 020209 energy General Chemical Engineering FLiBe Radiochemistry Salt (chemistry) chemistry.chemical_element 02 engineering and technology General Chemistry 010403 inorganic & nuclear chemistry Iodine 01 natural sciences 0104 chemical sciences law.invention chemistry.chemical_compound chemistry law 0202 electrical engineering electronic engineering information engineering Molten salt |
| Zdroj: | RSC Advances. 11:22611-22617 |
| ISSN: | 2046-2069 |
| DOI: | 10.1039/d1ra03614a |
| Popis: | In this study, the behavior of fission product iodine released from the melting process of a mixture consisting of UF4 irradiated with neutrons and 2LiF–BeF2 (FLiBe) salt was studied. The experiment showed that a large amount of iodine was released immediately during melting and captured by Ni metal foils. The transient release of iodine observed in this experiment is attributed to the redox reaction between the hot atoms of the fission product iodine that cumulated due to long-time irradiation. The effect of the redox status of the molten salt on the transient release of iodine was also investigated. Based on this investigation, it was proposed that the activity ratios of 131I to salt-seeking fission products in the fuel salt, as an effective diagnostic criterion, may be used for the surveillance of the redox potential of fuel salts in a molten salt reactor. |
| Databáze: | OpenAIRE |
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