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Sound Velocities of Lennard-Jones Systems Near the Liquid-Solid Phase Transition

Longitudinal and transverse sound velocities of Lennard-Jones systems are calculated at the liquid–solid coexistence using the additivity principle. The results are shown to agree well with the “exact” values obtained from their relations to excess energy and pressure. Some consequences, in particul...

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Autor principal: Khrapak, Sergey A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7435481/
https://www.ncbi.nlm.nih.gov/pubmed/32752011
http://dx.doi.org/10.3390/molecules25153498
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author Khrapak, Sergey A.
author_facet Khrapak, Sergey A.
author_sort Khrapak, Sergey A.
collection PubMed
description Longitudinal and transverse sound velocities of Lennard-Jones systems are calculated at the liquid–solid coexistence using the additivity principle. The results are shown to agree well with the “exact” values obtained from their relations to excess energy and pressure. Some consequences, in particular in the context of the Lindemann’s melting rule and Stokes–Einstein relation between the self-diffusion and viscosity coefficients, are discussed. Comparison with available experimental data on the sound velocities of solid argon at melting conditions is provided.
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spelling pubmed-74354812020-08-28 Sound Velocities of Lennard-Jones Systems Near the Liquid-Solid Phase Transition Khrapak, Sergey A. Molecules Article Longitudinal and transverse sound velocities of Lennard-Jones systems are calculated at the liquid–solid coexistence using the additivity principle. The results are shown to agree well with the “exact” values obtained from their relations to excess energy and pressure. Some consequences, in particular in the context of the Lindemann’s melting rule and Stokes–Einstein relation between the self-diffusion and viscosity coefficients, are discussed. Comparison with available experimental data on the sound velocities of solid argon at melting conditions is provided. MDPI 2020-07-31 /pmc/articles/PMC7435481/ /pubmed/32752011 http://dx.doi.org/10.3390/molecules25153498 Text en © 2020 by the author. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Khrapak, Sergey A.
Sound Velocities of Lennard-Jones Systems Near the Liquid-Solid Phase Transition
title Sound Velocities of Lennard-Jones Systems Near the Liquid-Solid Phase Transition
title_full Sound Velocities of Lennard-Jones Systems Near the Liquid-Solid Phase Transition
title_fullStr Sound Velocities of Lennard-Jones Systems Near the Liquid-Solid Phase Transition
title_full_unstemmed Sound Velocities of Lennard-Jones Systems Near the Liquid-Solid Phase Transition
title_short Sound Velocities of Lennard-Jones Systems Near the Liquid-Solid Phase Transition
title_sort sound velocities of lennard-jones systems near the liquid-solid phase transition
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7435481/
https://www.ncbi.nlm.nih.gov/pubmed/32752011
http://dx.doi.org/10.3390/molecules25153498
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