通过测量和模拟评价pe - b4c混凝土的中子活化性能

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2020-01-29 DOI:10.3233/jnr-190126

D. Hajdú, E. Dian, E. Klinkby, C. Cooper-Jensen, J. Osán, P. Zagyvai

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引用次数: 4

摘要

研究了新研制的用于欧洲散裂源(ESS) ERIC (European Spallation Source, https://europeanspallationsource.se/about)的pe - b4c混凝土的中子活化性能。一方面，混凝土活化与普通混凝土的活化进行了比较，普通混凝土是通过布达佩斯研究反应堆(BRR)(布达佩斯中子中心，https://www.bnc.hu/)中的辐照混凝土样品开发的。另一方面，测量的活度用于研究输入成分对蒙特卡罗激活模拟的影响。为此，用MCNPX和Cinder90模拟模拟了名义和实测混凝土元素成分，再现了辐照实验的完整过程。模拟表明，对于实际的活化预测，需要比名义上的更详细的元素组成。为此应用了能量色散x射线荧光(EDXRF)分析技术，为短期激活估计提供了公平的结果。

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Neutron activation properties of PE-B4C-concrete assessed by measurements and simulations

The neutron activation properties of the PE-B4C-concrete recently developed for the European Spallation Source (ESS) ERIC (European Spallation Source, https://europeanspallationsource.se/about) were investigated. On the one hand the concrete activation was compared to that of the ordinary concrete from which it was developed by means of irradiating concrete samples in the Budapest Research Reactor (BRR) (Budapest Neutron Centre, https://www.bnc.hu/). On the other hand, the measured activities were used to study the impact of input composition on Monte Carlo activation simulations. For this purpose, the complete course of the irradiation experiments were reproduced with MCNPX and Cinder90 simulations with nominal and measured elemental concrete compositions. Simulations suggest that for realistic activation predictions more detailed elemental compositions are required than the nominal ones. Energy-dispersive X-ray fluorescence (EDXRF) analysis technique was applied for this purpose, providing fair results for short-term activation estimations.

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.