Refractive index database

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Optical constants of RbF (Rubidium fluoride)
Li 1976: n 0.15–25 µm

Wavelength: µm

Complex refractive index (n+ik)[ i ]

n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula [ i ]



297 K (24 °C).


H. H. Li. Refractive index of alkali halides and its wavelength and temperature derivatives. J. Phys. Chem. Ref. Data 5, 329-528 (1976) and references therein.
* Sellmeier formula derivation is based on a single data point and knowledge of the dielectric constants and the characteristic absorption peaks.


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Rubidium fluoride, RbF

Rubidium fluoride (RbF) is a chemical compound formed by the union of rubidium cations (Rb+) and fluoride anions (F-). The compound manifests as a white or colorless crystalline solid. Like other alkali metal fluorides, RbF is highly soluble in water. In laboratories, rubidium fluoride is utilized mainly for research purposes, particularly in the synthesis of other rubidium-containing compounds. Owing to its high reactivity, especially when exposed to moisture or water, it's essential to handle and store RbF with care, typically under an inert atmosphere or in a desiccated environment.