Evaluation of the fraction of delayed photoneutrons for TMSR-SF1

doi:10.1007/s41365-017-0285-9

CAS OpenIR > 中科院上海应用物理研究所2011-2018年

	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
ISSN	1001-8042
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
DOI	10.1007/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
推荐引用方式 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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