XAFS analyses of molten metal fluorides

Haruaki Matsuura, Sou Watanabe, Hiroshi Akatsuka, Yoshihiro Okamoto, Ashok K. Adya

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    16 Citations (Scopus)
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    X-ray absorption fine structure studies of molten metal fluorides containing the materials related to nuclear engineering are intensively summarized. By using XAFS spectra data of divalent and trivalent cation metal fluorides in molten state which have been collected by authors’ group for a few years, local structure have been extracted and discussed systematically in conjunction with other spectroscopic studies and numerical calculations. In molten divalent fluorides, tetrahedral coordination of fluorides around a cation is predominant. In the case of pure molten trivalent fluorides, structure with more than 6-coordination has been suggested in some cases, but octahedral coordination structure is much stabilized at heavier rare earth metal fluorides. By mixing with alkali metal fluorides, it is a general trend that inter-ionic distances keep constant, but coordination number of fluorides decreases. In experimental chapter, all the details of sample preparation, furnace installation, X-ray optics setups and data analyses procedures are explained. Finally, future expectations of XAFS technique are also suggested.
    Original languageEnglish
    Pages (from-to)53-60
    Number of pages8
    JournalJournal of Fluorine Chemistry
    Issue number1
    Publication statusPublished - Jan 2009


    • Alkaline-earth metal fluoride
    • Lead fluoride
    • X-ray absorption fine structure
    • Pyrochemical treatment
    • Molten salt reactor
    • Local structure analysis
    • Molten metal fluoride
    • Rare earth metal fluoride
    • Synchrotron radiation


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