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| Evaluation of the fraction of delayed photoneutrons for TMSR-SF1 | |
| Ji, RM; Dai, Y; Zhu, GF; Yu, SH; Zou, Y; Liu, GM | |
| 2017 | |
| Source Publication | NUCLEAR SCIENCE AND TECHNIQUES
 |
| ISSN | 1001-8042 |
| Volume | 28Issue:9Pages:- |
| Subtype | 期刊论文 |
| Abstract | 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. |
| Keyword | Neutron Fraction Monte-carlo |
| DOI | 10.1007/s41365-017-0285-9 |
| Indexed By | SCI |
| WOS Keyword | NEUTRON FRACTION ; MONTE-CARLO |
| Language | 英语 |
| WOS ID | WOS:000408853800016 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.sinap.ac.cn/handle/331007/28646 |
| Collection | 中科院上海应用物理研究所2011-2019年 |
| Recommended Citation 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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| Evaluation of the fr（1208KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Download | |
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