Terahertz reflection spectroscopy of aqueous NaCl and LiCl solutions

Peter Uhd Jepsen, Hannes Merbold

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We present spectroscopic measurements of the full dielectric function of aqueous solutions of sodium chloride and lithium chloride at concentrations approaching their solubility limits at room temperature. We find that the dielectric properties of the two salts are rather different at THz frequencies. Whereas both the real and imaginary part of the permittivity of NaCl increases with concentration,we see that the imaginary part of the permittivity of LiCl (related to the absorption)decreases with increasing salt concentration. We relate these changes to the behavior
Original languageEnglish
JournalJournal of Infrared, Millimeter and Terahertz Waves
Issue number4
Pages (from-to)430-440
Publication statusPublished - 2010

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