The heat capacity of solid Kr-CH4 solutions with 30 and 60 mol.% CH4 has been studied at 0.8-20 K. The contribution of the rotational subsystem Crot to the heat capacity of the solutions is separated. The results obtained in this study and Ref. [4] were used to estimate the difference between the lowest-level energies of the nuclear spin A and T modifications of CH4 and to find the characteristic conversion times for the solutions with 5-60 mol.% CH4 at low temperatures.
Cite
@article{arxiv.cond-mat/0212600,
title = {Rotational excitations in concentrated solid Kr-CH4 solutions. Calorimetric studies},
author = {M. I. Bagatskii and V. G. Manzhelii and I. Ya. Minchina and D. A. Mashchenko and I. A. Gospodarev},
journal= {arXiv preprint arXiv:cond-mat/0212600},
year = {2016}
}