标题： 高温下部分电离的碳和氧混合物的状态方程 显示英文标题

标题： Equation of state for partially ionized carbon and oxygen mixtures at high temperatures

摘要： 状态方程（EOS）对于部分电离的碳、氧以及碳-氧混合物，在温度 3\times 10^5 K <~ T <~ 3\times 10^6 K 范围内，使用自由能最小化方法在等离子体的化学图景框架下计算了广泛的密度。 自由能模型是我们之前为纯碳开发的模型的改进扩展（Phys. Rev. E, 72, 046402; arXiv:physics/0510006）。 束缚物种的内部分子配分函数通过在等离子体环境中对每个电离阶段进行自洽处理，并考虑压力电离来计算。 离子之间的长程库仑相互作用以及自由电子对离子的屏蔽效应使用我们之前发表的解析模型，该模型最近进行了改进，特别是针对混合物的情况。 我们还提出了一种简单但精确的计算部分电离二元混合物 EOS 的方法，该方法基于纯物质的详细电离平衡计算。 显示英文摘要

摘要： The equation of state (EOS) for partially ionized carbon, oxygen, and carbon-oxygen mixtures at temperatures 3\times10^5 K <~ T <~ 3\times10^6 K is calculated over a wide range of densities, using the method of free energy minimization in the framework of the chemical picture of plasmas. The free energy model is an improved extension of our model previously developed for pure carbon (Phys. Rev. E, 72, 046402; arXiv:physics/0510006). The internal partition functions of bound species are calculated by a self-consistent treatment of each ionization stage in the plasma environment taking into account pressure ionization. The long-range Coulomb interactions between ions and screening of the ions by free electrons are included using our previously published analytical model, recently improved, in particular for the case of mixtures. We also propose a simple but accurate method of calculation of the EOS of partially ionized binary mixtures based on detailed ionization balance calculations for pure substances.