Determination of absorption coefficients of glasses at high tempera-tures, by measuring the thermal emissionLoenen, E.Van der Tempel, L.absorption coefficientemission coefficientglassheat transferinfrared radiationspectroscopyquartzhttp://resolver.tudelft.nl/uuid:39742db3-6907-458a-89df-c44080dc1734enreportPhilips Research1996-08-01An experimental setup built in 1995 measures the spectral absorptioncoefficient of glass as a function of temperature and wavelength bythe emissive method. The setup was improved, as well as the softwarefor processing the measurement data. The measurement results of quartzwere validated by comparison with several literature sources. Theabsorption spectra of Philips 360, GE 180, Schott 8486 Suprax, Corning1724 and Philips 441 glass were determined as a function of temperature.