Refractive Index Measurements of Molten Salts with Wave-Front-Shearing Interferometry
Open Access
- 1 September 1967
- journal article
- Published by Walter de Gruyter GmbH in Zeitschrift für Naturforschung A
- Vol. 22 (9) , 1363-1366
- https://doi.org/10.1515/zna-1967-0914
Abstract
A wave-front-shearing interferometer has been used to determine the refractive index of the alkali nitrates LiNO3, NaNO3, KNO3, RbNO3, and CsNO3 from the melting point to a temperature just below the decomposition point. The accuracy of these measurements has been estimated to ±3·10-5 which should be compared with ±3·10–3, being the estimated error in earlier determinations. The refractive index is found to depend almost linearly on temperature. For most of the investigated liquids, however, one gets a better fit to the measured values if a second order dependence is assumed.Keywords
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