Vaporization behaviour of the Molten Salt Fast Reactor fuel: The LiF-ThF4-UF4 system

JOURNAL OF NUCLEAR MATERIALS

卷:508

Article

Tosolin, A.^1,2  Benes, O.¹  Colle, J. -Y.¹  Soucek, P.¹  Luzzi, L.²  Konings, R. J. M.¹ 

[1] European Commiss, Joint Res Ctr, POB 2340, D-76125 Karlsruhe, Germany

[2] Politecn Milan, Dept Energy, Via La Masa 34, I-20156 Milan, Italy

关键词: Molten Salt Reactor;    Knudsen effusion mass spectrometry;    Vapour pressure;    Actinide fluorides;    Thermodynamic activities;   

DOI  :  10.1016/j.jnucmat.2018.05.049

来源: Elsevier

【 摘 要 】

A selected composition of the initial fuel of the Molten Salt Fast Reactor (MSFR) is assessed by differential scanning calorimetry (DSC) for melting point determination and by Knudsen effusion mass spectrometry (KEMS) for vaporization behaviour. Partial vapour pressures and thermodynamic activities of the MSFR fuel mixture are discussed indicating departures from ideal behaviour, and further interpreted by phase equilibria calculations. The boiling point of the mixture is obtained extrapolating vapour pressure experimental results. New results on the vaporization behaviour of pure uranium tetrafluoride are presented, together with the ionization potentials of UF4 by electron impact. (C) 2018 The Authors. Published by Elsevier B.V.

【 授权许可】

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