Evaluation of the fraction of delayed photoneutrons for TMSR-SF1
Ji, RM; Dai, Y; Zhu, GF; Yu, SH; Zou, Y; Liu, GM
2017
发表期刊NUCLEAR SCIENCE AND TECHNIQUES
ISSN1001-8042
卷号28期号:9页码:-
文章类型期刊论文
摘要The 10 MWth solid-fueled thorium molten salt reactor (TMSR-SF1) is a FLiBe salt-cooled pebble bed reactor to be deployed in 5-10 years, designed by the TMSR group. Due to a large amount of beryllium in the core, the photoneutrons are produced via (gamma, n) reactions. Some of them are generated a long time after the fission event and therefore are considered as delayed neutrons. In this paper, we redefine the effective delayed neutrons into two fractions: the delayed fission neutron fraction and the delayed photoneutron fraction. With some reasonable assumptions, the inner product method and the k-ratio method are adopted for studying the effective delayed photoneutron fraction. In the k-ratio method, the Monte Carlo code MCNP6 is used to evaluate the effective photoneutron fraction as the ratio between the multiplication factors with and without contribution of the delayed neutrons and photoneutrons. In the inner product method, with the Monte Carlo and deterministic codes together, we use the adjoint neutron flux as a weighting function for the neutrons and photoneutrons generated in the core. Results of the two methods agree well with each other, but the k-ratio method requires much more computing time for the same precision.
关键词Neutron Fraction Monte-carlo
DOI10.1007/s41365-017-0285-9
关键词[WOS]NEUTRON FRACTION ; MONTE-CARLO
收录类别SCI
语种英语
WOS记录号WOS:000408853800016
引用统计
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/28646
专题中科院上海应用物理研究所2011-2018年
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GB/T 7714
Ji, RM,Dai, Y,Zhu, GF,et al. Evaluation of the fraction of delayed photoneutrons for TMSR-SF1[J]. NUCLEAR SCIENCE AND TECHNIQUES,2017,28(9):-.
APA Ji, RM,Dai, Y,Zhu, GF,Yu, SH,Zou, Y,&Liu, GM.(2017).Evaluation of the fraction of delayed photoneutrons for TMSR-SF1.NUCLEAR SCIENCE AND TECHNIQUES,28(9),-.
MLA Ji, RM,et al."Evaluation of the fraction of delayed photoneutrons for TMSR-SF1".NUCLEAR SCIENCE AND TECHNIQUES 28.9(2017):-.
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