Abstract

Thermal analysis studies of some common phosphors were made. The exothermic and endothermic reactions of the phosphors were correlated with the fluorescent output and x-ray diffraction patterns. The maximum output of fluorescence was obtained from well-crystallized phosphors as manifested by sharp x-ray diffraction lines. Thermal analyses in conjunction with x-ray analyses have been used to elucidate the changes which occur in the formation of phosphors and in determining their proper firing temperatures.

© 1947 Optical Society of America

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