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Isochoric thermal conductivity of solid nitrogen

V. A. Konstantinov·V. G. Manzhelii·V. P. Revyakin·V. V. Sagan
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Abstract

The isochoric thermal conductivity of solid nitrogen has been investigated on four samples of different densities in the temperature interval from 20 K to the onset of melting. In alfa-N2 the isochoric thermal conductivity exhibits a dependence weaker than 1/T; in beta-N2 it increases slightly with temperature. The experimental results are discussed within a model in which the heat is transported by low-frequency phonons or by "diffusive" modes above the mobility boundary. The growth of the thermal conductivity in beta-N2 is attributed to the decreasing "rotational" component of the total thermal resistance, which occurs as the rotational correlations between the neighboring molecules become weaker.

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V. A. Konstantinov, V. G. Manzhelii, V. P. Revyakin, V. V. Sagan. 2004-12-02. Isochoric thermal conductivity of solid nitrogen. https://doi.org/10.1063/1.1925369

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