Dependence of cooling rate of SAXS spectra from a B₂O₃-PbO-Al₂O₃ glass

The phase separation of an 80% B₂O₃-15% PbO-5% Al₂O₃ (weight %) glass after splat-cooling was studied by small-angle X-ray scattering. The wavenumber which receives maximal amplification and the scattering intensity corresponding to this wavenumber were determined as a function of the cooling rate of the glass. The experimental results qualitatively agree with the main features of previous calculations based on the linear theory of spinodal decomposition, but no quantitative agreement is obtained.