Abstract
The Rayleigh scatterings of fluorine-doped silica glasses as a function of fictive temperature were examined. The scattered intensity of pure silica glass increases proportionally to fictive temperature, implying that density fluctuation increases proportionally to fictive temperature. While the Rayleigh scattering caused by concentration fluctuation increases with increasing fluorine concentration, the scattering due to the density fluctuation does not seem to depend significantly on fluorine concentration.
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