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贾国斌, 戴叶, 陈金根, 邹杨, 蔡翔舟. 氟盐冷却球床高温堆次锕系核素的嬗变研究[J]. 原子核物理评论, 2022, 39(4): 539-545. DOI: 10.11804/NuclPhysRev.39.2022018
引用本文: 贾国斌, 戴叶, 陈金根, 邹杨, 蔡翔舟. 氟盐冷却球床高温堆次锕系核素的嬗变研究[J]. 原子核物理评论, 2022, 39(4): 539-545. DOI: 10.11804/NuclPhysRev.39.2022018
Guobin JIA, Ye DAI, Jingen CHEN, Yang ZOU, Xiangzhou CAI. Study on Transmutation of Minor Actinides in Fluoride Cooled Pebble Bed High Temperature Reactor[J]. Nuclear Physics Review, 2022, 39(4): 539-545. DOI: 10.11804/NuclPhysRev.39.2022018
Citation: Guobin JIA, Ye DAI, Jingen CHEN, Yang ZOU, Xiangzhou CAI. Study on Transmutation of Minor Actinides in Fluoride Cooled Pebble Bed High Temperature Reactor[J]. Nuclear Physics Review, 2022, 39(4): 539-545. DOI: 10.11804/NuclPhysRev.39.2022018

氟盐冷却球床高温堆次锕系核素的嬗变研究

Study on Transmutation of Minor Actinides in Fluoride Cooled Pebble Bed High Temperature Reactor

  • 摘要: 针对氟盐冷却球床高温堆(FHR)深燃耗的特征,研究了FHR嬗变次锕系核素(MA)的可行性。研究结果表明:(1) 优化后燃料球的参数为U-235富集度19.75%,UO2与MAO2质量比为18:1;(2) 燃料球在堆芯内的流速为4.59 cm/d、最深燃耗150 GWd/tHM;(3) 次锕系核素的总嬗变率为26.16%。其中,Np-237、Am-241、Am-243通过中子的俘获吸收到重核素、\beta 衰变到裂变核素两条途径可有效嬗变,Cm-243、Cm-244、Cm-245由于轻核素的俘获吸收以及\beta 衰变的积累效应,不能有效嬗变。

     

    Abstract: According to the characteristics of deep burnup of fluorine salt cooled spherical bed high temperature reactor (FHR), the feasibility of transmutation of minor actinides by FHR is studied in this paper. The results show that: (1) the enrichment of U-235 is 19.75%, and the mass ratio of UO2 to MAO2 in triso is 18:1 after pebble optimized; (2) The flow rate of pebble in the core is 4.59 cm/d and the deepest burnup is 150 GWd/tHM; (3) The total transmutation rate of minor actinides is 26.16%. Among them, Np-237, Am-241 and Am-243 are transmuted by capture absorption and \beta decay to fission nuclide. Cm-243, Cm-244 and Cm-245 cannot transmute effectively, due to accumulation effect by capture adsorption and β decay.

     

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