Abstract
Using a resonator at frequencies 6.1–6.4 GHz, we measure the real part of the dielectric permittivity of newly formed freshwater ice with different content of impurities. We study the dependence of this quantity on the temperature in the range from -10°C to -90°C as well as its temporal variation for an ice storage time of up to three weeks at a constant temperature. It is found that the dependence of the dielectric permittivity of newly formed ice on the temperature in the studied range can be represented as two straight lines with a kink in the vicinity of -30°C. For an ice storage time of up to three weeks, a significant change in the slope of this dependence at higher temperatures and the disappearance of the kink are observed. The possible mechanism of this phenomenon is related to the existence and metamorphism of liquid conducting water films.
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Bordonsky, G.S., Istomin, A.S. & Tsyrenzhapov, S.V. Dependence of the Real Part of the Dielectric Permittivity of Freshwater Ice on the Temperature and Storage Time in the Centimeter Wave Range. Radiophysics and Quantum Electronics 45, 958–962 (2002). https://doi.org/10.1023/A:1023529432440
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DOI: https://doi.org/10.1023/A:1023529432440