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Abstract

The surface condition of a glass melt, namely its optical properties, has significant influence on the melting process. The surface layer of the melt acts as interface layer between the radiation source and the as radiation sink acting glass melt. All radiation that will heat up the melt first has to pass the melt surface. This is why it is important to keep the surface in a state of high optical transmission. Because no means of measuring the optical properties of a melt surface are available so far, a new approach has been tested out to obtain information about the melt surface using “small angle backscattered laser radiation” and presented in ref.1. The self-radiation of the melt however is something that complicates optical measurements.