Transmutation of long-lived fission products in an advanced nuclear energy system

doi:10.1038/s41598-022-06344-y

	Transmutation of long-lived fission products in an advanced nuclear energy system
	Sun, X. Y.1; Luo, W.1; Lan, H. Y.1; Song, Y. M.1; Gao, Q. Y.2; Zhu, Z. C.1; Chen, J. G.3; Cai, X. Z.3
刊名	SCIENTIFIC REPORTS
	2022-02-09
卷号	12 期号:1 页码:12
ISSN号	2045-2322
DOI	10.1038/s41598-022-06344-y
通讯作者	Luo, W.(wenluo-ok@163.com) ; Chen, J. G.(chenjg@sinap.ac.cn)
英文摘要	Disposal of long-lived fission products (LLFPs) produced in reactors has been paid a lot attention for sustainable and clean nuclear energy. Although a few transmutation means have been proposed to address this issue, there are still scientific and/or engineering challenges to achieve efficient transmutation of LLFPs. In this study, we propose a novel concept of advanced nuclear energy system (ANES) for transmuting LLFPs efficiently without isotopic separation. The ANES comprises intense photoneutron source (PNS) and subcritical reactor, which consist of lead-bismuth (Pb-Bi) layer, beryllium (Be) layer, and fuel, LLFPs and shield assemblies. The PNS is produced by bombarding radioactive cesium and iodine target with a laser-Compton scattering (LCS) y-ray beam. We investigate the effect of the ANES system layout on transmutation efficiency by Monte Carlo simulations. It is found that a proper combination of the Pb-Bi layer and the Be layer can increase the utilization efficiency of the PNS by a factor of similar to 10, which helps to decrease by almost the same factor the LCS y-beam intensity required for driving the ANES. Supposing that the ANES operates over 20 years at a normal thermal power of 500 MWt, five LLFPs including Tc-99, I-129, (107)pd, 1(37)Cs and Se-79 could be transmuted by more than 30%. Their effective half-lives thus decrease drastically from similar to 10(6) to less than 10(2) years. It is suggested that this successful implementation of the ANES paves the avenue towards practical transmutation of LLFPs without isotopic separation.
资助项目	National Natural Science Foundation of China, China[11675075] ; National Natural Science Foundation of China, China[11605084] ; Youth Talent Project of Hunan Province, China[2018RS3096]
WOS关键词	LASER-COMPTON SCATTERING ; REACTOR ; FUEL
WOS研究方向	Science & Technology - Other Topics
语种	英语
出版者	NATURE PORTFOLIO
WOS记录号	WOS:000757457000089
资助机构	National Natural Science Foundation of China, China ; Youth Talent Project of Hunan Province, China
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/142065]
专题	中国科学院近代物理研究所
通讯作者	Luo, W.; Chen, J. G.
作者单位	1.Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China 2.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 3.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China
推荐引用方式 GB/T 7714	Sun, X. Y.,Luo, W.,Lan, H. Y.,et al. Transmutation of long-lived fission products in an advanced nuclear energy system[J]. SCIENTIFIC REPORTS,2022,12(1):12.
APA	Sun, X. Y..,Luo, W..,Lan, H. Y..,Song, Y. M..,Gao, Q. Y..,...&Cai, X. Z..(2022).Transmutation of long-lived fission products in an advanced nuclear energy system.SCIENTIFIC REPORTS,12(1),12.
MLA	Sun, X. Y.,et al."Transmutation of long-lived fission products in an advanced nuclear energy system".SCIENTIFIC REPORTS 12.1(2022):12.