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Relationship between Radioluminance and the Dielectric Properties of Aqueous Salt Solutions in the Millimeter-Wavelength Spectral Range

  • PHYSICAL CHEMISTRY OF SOLUTIONS
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Abstract

A new approach is developed to studying aqueous solutions of salts based on their emission in the millimeter waves spectral range. Using a highly sensitive radiometer at a frequency of 61.2 GHz, reflection coefficients and radioluminance contrasts are determined for solutions of alkali metal sulfates in a wide range of concentrations. Changes with opposite signs that occur in solutions as compared to water are revealed. Theoretical substantiation and a quantitative description of the measured effects are given, based on the complex dielectric permittivities of the solutions. It is shown that emission reflects the contributions from both dipole and ionic loss that remain substantial at the considered frequencies; they can even identify the presence of emission effects with opposite signs.

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Authors and Affiliations

  1. Kurnakov Institute of General and Inorganic Chemistry. Russian Academy of Sciences, 119991, Moscow, Russia

    A. K. Lyashchenko, I. M. Karataeva & V. S. Dunyashev

Authors
  1. A. K. Lyashchenko
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  2. I. M. Karataeva
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  3. V. S. Dunyashev
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Correspondence to A. K. Lyashchenko.

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Translated by O. Polyakov

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Lyashchenko, A.K., Karataeva, I.M. & Dunyashev, V.S. Relationship between Radioluminance and the Dielectric Properties of Aqueous Salt Solutions in the Millimeter-Wavelength Spectral Range. Russ. J. Phys. Chem. 93, 682–687 (2019). https://doi.org/10.1134/S0036024419040204

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  • DOI: https://doi.org/10.1134/S0036024419040204

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