Abstract
The absorption coefficient α has been measured in aqueous solutions of potassium acetate and magnesium sulfate in the frequency range from 15 to 50 Mc using pulse equipment. The measurements were made at several concentrations in the potassium acetate solutions. These results show a decrease in the absorption below the pure water value for frequencies above 27 Mc. Water solutions of 0.2 molal magnesium sulfate were prepared with various mixtures of methyl alcohol and water as the solvent. It was found that the higher relaxational frequency (above 200 Mc) decreased, and the value of (2αλ)max increased as the dielectric constant decreased. This behavior is similar to that reported by Tamm, Kurtze, and Kaiser for the lower relaxational frequency. This work was supported in part by the Office of Naval Research.
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