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An improved Lindemann melting rule

机译:改进的Lindemann熔化法则

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摘要

The Lindemann melting rule associates the value of the melting point with that of the temperature-dependent thermal vibration amplitude at the melting point. We test the rule over a wide range of metallic elements. It works fairly well over the entire periodic system, from Li to Pu, provided that the temperature dependence of the elastic properties and the variation in the critical vibrational amplitude with mass are taken into account. The accuracy of various modifications of the Lindemann rule is evaluated. We propose a new physical interpretation of the Lindemann rule, based on the phonon mean free path. [References: 16]
机译:Lindemann熔化规则将熔点的值与熔点处与温度相关的热振动幅度的值关联起来。我们在各种金属元素上测试该规则。只要考虑到弹性特性的温度依赖性以及临界振动振幅随质量的变化,它在从Li到Pu的整个周期系统中都可以很好地工作。评估Lindemann规则的各种修改的准确性。我们基于声子平均自由程,提出了对Lindemann规则的新物理解释。 [参考:16]

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