Determination of the Th-232(n,2n)Th-231 reaction rate in thorium oxide cylinder assembly under D-T neutron source
Determination of the Th-232(n,2n)Th-231 reaction rate in thorium oxide cylinder assembly under D-T neutron source
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D-T中子源下氧化钍圆筒组件中Th-232(n,2n)Th-231反应速率的测定
DOI：
10.1007/s10967-018-5851-z
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发表时间：
2018
影响因子：
1.6
通讯作者：
Liu ZJ
中科院分区：
文献类型：
--
作者：
Wen Jie;Liu Zhujun;Wen Jie;Yang Yiwei;Liu Rong;Liu Zhujun;Wang Mei;Wen Zhongwei;Liu ZJ;Liu ZJ
为了验证聚变裂变混合堆钍基亚临界包层概念设计中232Th(n,2n)反应截面评估结果，采用D-T中子活化技术进行了整体实验。在ThO2圆柱组件中测量了232Th(n,2n)反应速率，相对不确定度为8.0%。实验采用MCNP代码结合ENDF/B-VII.0、ENDF/B-VII.1、CENDL-3.1和JENDL-4.0数据库进行模拟。使用JENDL-4.0计算的232Th(n,2n)反应速率与测量值的差异很小。研究结果可为232Th(n,2n)截面的重新评估和聚变-裂变混合堆的设计提供参考。
Aiming at verifying the evaluated cross-section of232Th(n,2n) reaction for the conceptual design of thorium based subcritical blanket in fusion–fission hybrid reactor, an integral experiment was carried out using activation technique with D-T neutrons.232Th(n,2n) reaction rates were measured in a ThO2cylinder assembly with relative uncertainty of 8.0%. The experiment was simulated by MCNP code combining with ENDF/B-VII.0, ENDF/B-VII.1, CENDL-3.1 and JENDL-4.0 databases. The calculated232Th(n,2n) reaction rates employing JENDL-4.0 show low discrepancy with the measured ones. The results could provide reference to the re-evaluation of232Th(n,2n) cross-section and the design of fusion–fission hybrid reactor.