Journal of Radio Electronics. eISSN 1684-1719. 2026. ¹3
Full text in Russian (pdf)
DOI: https://doi.org/10.30898/1684-1719.2026.3.6
The Dielectric Relaxation Time Distribution Function
in Frozen and Thawed Organomineral Soil
over the Frequency Range from 10 MHz to 15 GHz
A.Yu. Karavayskiy, Yu.I. Lukin
Kirensky Institute of Physics – Federal Research Center KSC Siberian Branch RAS
660036, Russia, Krasnoyarsk, Akademgorodok, 50, bld. 38
The paper was received February 17, 2026.
Abstract. The relaxation time distribution function recovery method was applied to analyze the complex dielectric permittivity spectra of moist organomineral soil from the Krasnoyarsk forest-steppe. Measurements were conducted over the electromagnetic field frequency range from 10 MHz to 15 GHz at temperatures from –30 to +25 °C during a heating process. It is shown that for this soil type, the distribution function has a quasi-discrete form. Within the studied frequency range, up to six relaxation processes in the soil were identified: a dominant low-frequency Maxwell-Wagner interfacial polarization (30,000–100,000 ps), a high-frequency process whose spectrum likely includes contributions from both free and mobile bound water (6–50 ps), and a group of processes associated with various states of bound water (100–20,000 ps). The results demonstrate the effectiveness of the relaxation time distribution function recovery method for the detailed analysis of the dielectric properties of complex heterogeneous systems, such as soils.
Key words: dielectric relaxation, relaxation time distribution function, complex dielectric permittivity, moist soil, organomineral soil, Maxwell-Wagner polarization, bound water.
Financing: The work was carried out within the framework of the scientific topic of the State Assignment of the Kirensky Institute of Physics of the Siberian Branch of the Russian Academy of Sciences.
Corresponding author: Karavayskiy Andrey Yurievich, rsdak@ksc.krasn.ru
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For citation:
Karavayskiy A.Yu., Lukin Yu.I. The dielectric relaxation time distribution function in frozen and thawed organomineral soil over the frequency range from 10 MHz to 15 GHz // Journal of Radio Electronics. – 2026. – ¹. 3. https://doi.org/10.30898/1684-1719.2026.3.6 (In Russian)