Supercritical fluctuations in the B2O3PbOAl2O3 system |
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Authors: | J. Zarzycki F. Naudin |
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Affiliation: | Centre de Recherches, Cie de Saint-Gobain, 52, Boulevard de la Villette, Paris 19e, France |
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Abstract: | A small-angle X-ray diffraction study of the supercritical region of the B2O3PbOAl2O3 immiscibility surface is presented. This is the first time that diffraction methods have been applied to the study of critical opalescence in a system of oxides at high temperatures. Debye's theory is shown to be applicable and, from the spectra correlation lengths and the range of molecular interactions l is calculated. The topography of the supercritical region is determined and the relationship between l and the main interatomic distances in the melt discussed. |
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