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Molecular dynamics of liquid alkali metals near melting temperature

机译:熔融温度附近液态碱金属的分子动力学

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摘要

In the present research article we report a study of certain properties like binding energy, pair distribution function g(r), structure factor S(q), velocity auto correlation function (VACF) and its spectral density, radial distribution function (RDF), self-diffusion coefficient, and coordination number of liquid alkali metals (Li, Na, K, Rb, and Cs) near the melting temperature using molecular dynamics (MD) simulation technique with a pseudopotential proposed earlier by us. Good agreement with the experiment is observed for the binding energy, pair distribution function, structure factor, and self-diffusion coefficient and these results also compare favorably with the results obtained by other theoretical calculations. This confirms the transferability of the pseudopotential formalism from solid to liquid environment in the case of alkali metals.
机译:在本研究文章中,我们报告了对某些特性的研究,例如结合能,对分布函数g(r),结构因子S(q),速度自相关函数(VACF)及其光谱密度,径向分布函数(RDF),利用分子动力学(MD)模拟技术和我们较早提出的拟电位,在熔化温度附近的液态碱金属(Li,Na,K,Rb和Cs)的自扩散系数和配位数。观察到结合能,成对分布函数,结构因子和自扩散系数与实验良好吻合,这些结果也与通过其他理论计算获得的结果相吻合。这证实了在碱金属的情况下伪势形式从固体到液体环境的可转移性。

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