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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2020, Volume 111, Issue 3, Pages 181–185
DOI: https://doi.org/10.31857/S0370274X2003008X (Mi jetpl6102) 		 
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
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DOI: https://doi.org/10.31857/S0370274X2003008X
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.
Funding agency Grant number
Russian Foundation for Basic Research 18-02-00845_à
Ministry of Education and Science of the Russian Federation
The experimental part of the work was supported by the Russian Foundation for Basic Research (project no. 18-02-00845-a) and in part by the Russian Government Program for the Competitive Growth of Kazan Federal University.
Received: 24.12.2019
Revised: 24.12.2019
Accepted: 24.12.2019
English version:
Journal of Experimental and Theoretical Physics Letters, 2020, Volume 111, Issue 3, Pages 167–171
DOI: https://doi.org/10.1134/S0021364020030121
Bibliographic databases:
Document Type: Article
Language: Russian
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
Citation in format AMSBIB
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