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Hierarchy of dielectric relaxation times in water

机译:水中介电弛豫时间的层次

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摘要

This work presents a simple model, which allows us to obtain the relation between macroscopic and microscopic dielectric relaxation times in water on the basis of the Zwanzig-Mori formalism for the time correlation functions. In the model it is supposed that water consists of areas, so-called clusters, the size of which are defined by the dipoles spatial correlation radius. The macroscopic dielectric relaxation time of a sample is the relaxation time of the cluster polarization. The obtained relation between macroscopic and microscopic dielectric relaxation times contains the parameters depending on the cluster shape and structure. Such an approach is valid for the associated liquids having one macroscopic relaxation time only. As to systems with the wide distribution of relaxation times this approach demands generalization. (C) 2002 Elsevier Science B.V. All rights reserved. [References: 34]
机译:这项工作提出了一个简单的模型,该模型使我们能够基于Zwanzig-Mori形式主义的时间相关函数来获得水中宏观和微观介电弛豫时间之间的关系。在该模型中,假设水由区域组成,即所谓的簇,其大小由偶极子的空间相关半径定义。样品的宏观介电弛豫时间是簇极化的弛豫时间。所获得的宏观和微观介电弛豫时间之间的关系包含取决于团簇形状和结构的参数。这种方法仅对具有一个宏观弛豫时间的相关液体有效。对于弛豫时间分布广泛的系统,此方法需要推广。 (C)2002 Elsevier Science B.V.保留所有权利。 [参考:34]

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