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Dynamics of liquid lithium atoms: Time scales and dynamic correlation functions

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dc.contributor.author Khusnutdinoff R.M.
dc.date.accessioned 2021-02-25T20:43:48Z
dc.date.available 2021-02-25T20:43:48Z
dc.date.issued 2020
dc.identifier.issn 1561-4085
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/162326
dc.description.abstract © 2020, Education and Upbringing Publishing. All rights reserved. Based on the configuration data on molecular dynamics simulation of the lithium melt near the melting point, the memory functions of the relaxation process of the density fluctuations are calculated. It is established that for the range of wave numbers corresponding to microscopic spatial scales, the memory functions of the first four orders are characterized by oscillating behavior. This feature indicates that the model memory functions in the case of phenomenological description of the dynamics of the density fluctuations can not have the form of monotonically decreasing functions. The frequency characteristics of the dynamic structure factor for a wide range of wave numbers are calculated. The convergence of the relaxation parameters Δ4(k) and Δ5(k) for the range of wave numbers from the hydrodynamic regime (k → 0) to the values of k is higher than the boundary of the first pseudo-Brillouin zone (for k ≈ 0:87km) are detected. The characteristic time scales of the process of structural relaxation of the density fluctuations are determined.
dc.relation.ispartofseries Nonlinear Phenomena in Complex Systems
dc.subject Correlation function
dc.subject Lithium melt
dc.subject Memory function
dc.subject Molecular dynamics
dc.subject Relaxation
dc.title Dynamics of liquid lithium atoms: Time scales and dynamic correlation functions
dc.type Article
dc.relation.ispartofseries-issue 1
dc.relation.ispartofseries-volume 23
dc.collection Публикации сотрудников КФУ
dc.relation.startpage 90
dc.source.id SCOPUS15614085-2020-23-1-SID85084136118


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  • Публикации сотрудников КФУ Scopus [24551]
    Коллекция содержит публикации сотрудников Казанского федерального (до 2010 года Казанского государственного) университета, проиндексированные в БД Scopus, начиная с 1970г.

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