Abstract—

This paper describes a joint correlation analysis of the heat capacity C_p(T) and volume thermal expansivity β(T) of potassium chloride (KCl) over the entire temperature range of its solid state (from absolute zero to T_m). A trilinear model for the β(C_p) correlation dependence, consistent with experimental data and consisting of three smoothly joined linear segments, has been constructed. The differential Grüneisen parameter γ ' ~ ∂β/∂C_p, convenient for describing such behavior, has three characteristic steps. Analysis of data in this model has made it possible to tabulate thermodynamic and thermal expansion data for solid KCl, in good agreement with the most reliable experimental data.

中文翻译：

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固体氯化钾热容和热膨胀的联合分析

摘要-

本文描述了氯化钾（KCl）在其整个固态温度范围内（从绝对零到T _m）的热容C _p（T）和体积热膨胀系数β（T）的联合相关性分析。建立了一个与实验数据一致并由三个平滑连接的线性部分组成的三线性模型，用于β（C _p）相关性依赖性。差动Grüneisen参数γ'〜∂β/∂ Ç _p方便描述此类行为，具有三个特征步骤。通过对该模型中的数据进行分析，可以将固体氯化钾的热力学和热膨胀数据制成表格，与最可靠的实验数据高度吻合。