Post fission time evolution calculation by FIFRELIN coupled with PHITS and DCHAIN

Post fission time evolution calculation by FIFRELIN coupled with PHITS and DCHAIN
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FIFRELIN 结合 PHITS 和 DCHAIN 进行裂变后时间演化计算

DOI:
10.1140/epja/s10050-022-00800-z
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发表时间:
2022
期刊:
The European Physical Journal A
影响因子:
--
通讯作者:
Serot Olivier
Serot Olivier
中科院分区:
--
文献类型:
--
作者:
Ogawa Tatsuhiko;Litaize Olivier;Mancusi Davide;Chebboubi Abdelhazize;Serot Olivier

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将裂变反应蒙特卡罗代码FIFRELIN与通用辐射输运模拟代码PHITS接口,用于计算裂变反应后观测值的时间演化。将FIFRELIN的同位素裂变产率数据输入DCHAIN-PHITS,利用PHITS基于激活和衰变数据库及Bateman方程的燃烬计算功能,计算u (n,裂变)脉冲后0.2 ~ 10s的衰变热时间演变,并与文献数据进行比较。对比表明,最新的FIFRELIN能够准确预测衰变热的时间演变,而先前版本的FIFRELIN高估了前10秒的衰变热。除了燃烧计算外,还可以通过将FIFRELIN计算的提示辐射和延迟辐射的光谱传递给PHITS的粒子输运功能来进行输运模拟。这种组合有助于根据FIFRELIN精确的裂变物理原理设计探测器、实验和屏蔽。FIFRELIN与PHITS相连接,是研究裂变反应可观测值的有力工具。
Fission reaction Monte–Carlo code FIFRELIN is interfaced to a general-purpose radiation transport simulation code PHITS to calculate the time evolution of observables after fission reactions. By feeding the isotopic fission yield data of FIFRELIN to DCHAIN-PHITS, the burn-up calculation functionality of PHITS based on the activation and decay data libraries and the Bateman equation, the time evolution of decay heat from 0.2 to 10seconds after theU(n,fission) pulse was calculated and compared with literature data. The comparison illustrated that the latest FIFRELIN can accurately predict the time evolution of decay heat, whereas the previous version of FIFRELIN overestimated the decay heat in the first 10 sec. In addition to burn-up calculations, transport simulations of both prompt and delayed radiation can be performed by passing their spectra calculated by FIFRELIN to particle transport functionality of PHITS. This combination helps design detectors, experiments, and shielding based on the accurate fission physics of FIFRELIN. Being interfaced to PHITS, FIFRELIN is a powerful tool for studying the observables of fission reactions.
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