Modeling the Wavelength Dependence of the Index of Refraction of Water in the Range 200 nm to 200 mum.

We modeled the index of refraction of water at a temperature of25 degrees C, employing a Lorentz model for wavelengths ranging from 200 nmto 200 mum. We determined model parameters by minimizingdiscrepancies between calculated and experimental data, using an elitegenetic algorithm with adaptive mutations. We found that a Lorentzmodel with six oscillators fits the available data well in the wholerange of interest.