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This article is cited in 1 scientific paper (total in 1 paper)
CONDENSED MATTER
Mössbauer method for studying vibrations in a granular medium excited by ultrasound
R. N. Shakhmuratovab, F. G. Vagizovb a Kazan Physical–Technical Institute, Federal Research Center, Kazan Scientific Center,
Russian Academy of Sciences, Kazan, 420029 Russia
b Kazan Federal University, Kazan, 420008 Russia
Abstract:
Vibrations of a granular medium immersed in epoxy resin without a hardener have been studied by Mössbauer spectroscopy. The granular medium consists of small potassium ferrocyanide particles enriched in the $^{57}$Fe Mössbauer isotope and having a mean size of 1.25 $\mu$m. Vibrations of particles in resin at a frequency of 12.72 MHz have been excited by means of a polymer piezoelectric transducer. The spectrum of $^{57}$Fe nuclei at rest in potassium ferrocyanide consists of a single line. Ultrasonic irradiation results in the splitting of the line into a comb structure with a frequency period equal to the frequency of vibrations. The analysis of the spectrum makes it possible to estimate the amplitude of vibrations of granules and damping of sound in such a medium. The proposed method is unique because it allows measuring subangstrom displacements of particles from their equilibrium positions.
Received: 24.12.2019 Revised: 24.12.2019 Accepted: 24.12.2019
Citation:
R. N. Shakhmuratov, F. G. Vagizov, “Mössbauer method for studying vibrations in a granular medium excited by ultrasound”, Pis'ma v Zh. Èksper. Teoret. Fiz., 111:3 (2020), 181–185; JETP Letters, 111:3 (2020), 167–171
Linking options:
https://www.mathnet.ru/eng/jetpl6102 https://www.mathnet.ru/eng/jetpl/v111/i3/p181
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Abstract page: | 103 | Full-text PDF : | 9 | References: | 20 | First page: | 1 |
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