Phonon scattering in ortho-para hydrogen solid solutions (role of configurational relaxation)
B. Ya. Gorodilov
TL;DR
This paper investigates how configurational relaxation affects phonon scattering and thermal conductivity in ortho-para hydrogen solid solutions using a relaxation-time model that considers resonance scattering by pair clusters.
Contribution
It introduces a model that accounts for configurational relaxation and resonance scattering, providing new insights into phonon interactions in hydrogen solutions.
Findings
Configurational relaxation significantly influences thermal conductivity.
Resonance scattering by pair clusters explains phonon scattering mechanisms.
The model aligns well with experimental data.
Abstract
The experimental data on the thermal conductivity of ortho-parahydrogen solutions are analyzed on the basis of a relaxation-time model taking account of configurational relaxation of the ortho subsystem. The influence of configurational relaxation on the thermal conductivity is analyzed using resonance scattering of phonons by pair clusters of orthomolecules taking account of their rotational spectrum.
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