TEMPERATURE VARIATION OF THE REFRACTIVE INDEX OF FUSED QUARTZ.

P S NARAYANAN

Abstract


Using an interference method the temperature variation of the refractive index of fused quartz of optical quality has been studied from 30° C. to 750° C. The existence of an irregularity close to the alpha-beta transformation temperature of quartz has been confirmed and a secondary maximum close to the transformation temperature of cristobalite has been out.

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