Coulomb plasmas crystallize in a number of physical systems, such as dusty plasmas, neutron star crusts, and white dwarf cores. The crystal structure of the one component and binary plasma has received significant attention in the literature, though the less studied multicomponent plasma may be most relevant for many physical systems which contain a large range of particle charges. We report on molecular dynamics simulations of multicomponent plasmas near the melting temperature with mixtures taken to be realistic X-ray burst ash compositions. We quantify the structure of the crystal with the bond order parameters and radial distribution function. Consistent with past work, low charge particles form interstitial defects and we argue that they are in a quasi-liquid state within the lattice. The lattice shows screening effects which preserves long range order despite the large variance in particle charges, which may impact transport properties relevant to astrophysics.

中文翻译：

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多组分库仑晶体的结构

库仑等离子体在许多物理系统中结晶，例如尘土等离子体，中子星壳和白矮星核。单组分和二元等离子体的晶体结构在文献中受到了极大的关注，尽管研究较少的多组分等离子体可能与包含大量粒子电荷的许多物理系统最相关。我们报告了熔融温度附近的多组分等离子体的分子动力学模拟，其中混合物被认为是现实的X射线爆发灰分成分。我们用键序参数和径向分布函数来量化晶体的结构。与过去的工作一致，低电荷粒子形成间隙缺陷，我们认为它们在晶格内处于准液态。