Raman Scattering Measurement Of Oxide Glass Melts At High Temperature

Raman scattering measurements were performed on the glasses and melts of the system Na2O-(x/2)-(4-x)SiO2, where Na/(B+Si) ratio fixed at 1/2 and B/Si ratio was changed, over the temperature range from room temperature to 1300 deg C, in order to clarify the correlation with the glass properties like solubility of metal, redox equilibrium etc., which are much influenced by chemical state of melts at high temperature. Polarized Raman scattering spectra with high signal/noise ratio could be obtained in short time period even at over 1300 deg C by employing SHG Pulse Nd:YAG laser for excitation source and the appropriate optical arrangements.