arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2003.07462cond-mat.mtrl-sci
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熔融态FLiNaK的结构

The Structure of Molten FLiNaK

Benjamin A. Frandsen, Stella D. Nickerson, Austin D. Clark, Andrew Solano, Raju Baral, Johnny Williams, Jörg Neuefeind, Matthew Memmott

摘要:

用从头算分子动力学模拟和中子全散射实验研究了熔盐核反应堆潜在冷却剂(LiF)$_{0.465}$(NaF)$_{0.115}$(KF)$_{0.42}$(FLiNaK)的结构。我们发现,盐保留良好定义的短程结构相关性约9埃在典型的反应堆操作温度。通过分子动力学模拟,可以定量准确地描述实验确定的对分布函数。这些结果表明,基本的离子相互作用被适当地捕获的模拟,提供了一个发射点,为未来的研究FLiNaK和其他熔盐的核反应堆应用。

英文摘要:

The structure of the molten salt (LiF)$_{0.465}$(NaF)$_{0.115}$(KF)$_{0.42}$ (FLiNaK), a potential coolant for molten salt nuclear reactors, has been studied by ab initio molecular dynamics simulations and neutron total scattering experiments. We find that the salt retains well-defined short-range structural correlations out to approximately 9 Angstroms at typical reactor operating temperatures. The experimentally determined pair distribution function can be described with quantitative accuracy by the molecular dynamics simulations. These results indicate that the essential ionic interactions are properly captured by the simulations, providing a launching point for future studies of FLiNaK and other molten salts for nuclear reactor applications.

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