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<p>Very little data exists in the literature for absorption spectra at some low-energy X-ray edges, particularly the fluorine K-edge (696.7&#xa0;eV). Though it is difficult to obtain extended X-ray absorption fine structure (EXAFS), considerable information is contained in the X-ray absorption near edge structure (XANES). This paper describes some proof of principle measurements of the F K-edge XANES collected at room temperature at the Canadian Light Source Spherical Grating Monochromator beamline. Specific materials of interest to the nuclear science community are discussed, including fluoride metal binaries, F-containing oxide glasses for radioactive waste, and clay buffer materials. Preliminary insights comparing spectral features with material structure are offered, along with some correlations observed from <sup>19</sup>F nuclear magnetic resonance data presented in the literature. Possible future uses of this promising technique are also discussed.</p> Graphical abstract <p></p>

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Fluorine K-edge X-ray absorption spectroscopy of glasses, minerals, and salts related to nuclear science

  • 期刊论文

  • 发表日期：

    2025年3月27日

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  • John S. McCloy,
  • John M. Bussey,
  • Malin C. J. Dixon Wilkins

摘要

Very little data exists in the literature for absorption spectra at some low-energy X-ray edges, particularly the fluorine K-edge (696.7 eV). Though it is difficult to obtain extended X-ray absorption fine structure (EXAFS), considerable information is contained in the X-ray absorption near edge structure (XANES). This paper describes some proof of principle measurements of the F K-edge XANES collected at room temperature at the Canadian Light Source Spherical Grating Monochromator beamline. Specific materials of interest to the nuclear science community are discussed, including fluoride metal binaries, F-containing oxide glasses for radioactive waste, and clay buffer materials. Preliminary insights comparing spectral features with material structure are offered, along with some correlations observed from 19F nuclear magnetic resonance data presented in the literature. Possible future uses of this promising technique are also discussed.

Graphical abstract