Refractive Index of Molten LaCl₃-KCl, LaCl₃-NaCl, and LaCl₃-CaCl₂ Mixtures

Abstract

The refractive indexes of molten LaCl 3 -KCl, LaCl 3 -NaCl, and LaCl 3 -CaCl 2 mixtures were measured goniometrically for nine wavelengths and represented by empirical formulas as functions of both temperature and wavelength. According to the obtained formulas and the molar volume data, the molar refractivities and the electronic polarizabilities were estimated.