Phonon Scattering and Heat Transfer in Simple Molecular Crystals

Abstract

This report is dedicated to the study of high-temperature isochoric thermal conductivity and phonon scattering in solidified inert gases and simple molecular crystals in which the molecules rotate as a whole. The experimental data accumulated over the past 2–3 decades has cast doubt on the correctness of some ideas about the thermal conductivity of solids which had seemed to be established and, in particular, the description of the thermal conductivity of perfect crystals at temperatures above or of the order of the Debye temperature (T ≥ Θ). Quite recently, it was not doubted that high-temperature thermal conductivity is proportional to the inverse temperature law, λ ∝ 1/T. It was based on both the experimental data and assumptions being evident at first sight from which this dependence followed.