Low Temperature Physics: 40, 1008 (2014); https://doi.org/10.1063/1.4901988
Fizika Nizkikh Temperatur: Volume 40, Number 11 (November 2014), p. 1290-1295    ( to contents , go back )

The features of heat transfer in solid tetrahydrofuran

V.A. Konstantinov, V.V. Sagan, V.P. Revyakin, and A.V. Karachevtseva

B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine 47 Lenin Ave., Kharkov 61103, Ukraine
E-mail: konstantinov@ilt.kharkov.ua

Received May 25, 2014

Abstract

The isochoric thermal conductivity of solid tetra-hydrofuran C4H8O (a cyclic hydrocarbon with pseudo-rotational motion of molecules) has been measured on samples of different densities in the temperature range 120–180 K. The isochoric thermal conductivity decreases with temperature by the law much weaker than 1/T. The experimental data are interpreted in terms of the Debye model of thermal conductivity with allowance for the heat transfer by both low-frequency phonons and “diffuse” modes. No significant contribution of the pseudo-rotation on the thermal conductivity has been detected.

PACS: 66.70.–f Nonelectronic thermal conduction and heat-pulse propagation in solids; thermal waves;
PACS: 63.20.kk Phonon interactions with other quasiparticles.

Key words: thermal conductivity, tetrahydrofuran, pseudo-phonons, “diffuse” modes.

Published online: September 22, 2014

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