A new density functional theory, average atom based model for the electrical conductivity of dense plasmas with a mixture of ion species, containing no adjustable parameters, is presented. The model takes the temperature, mass density and relative abundances of the species as input. It takes into account partial ionization, ionic structure, and core-valence orthogonality, and uses quantum mechanical calculations of cross sections. Comparison to an existing high fidelity but computationally expensive method reveals good agreement. The new model is computationally efficient and can reach high temperatures. A new mixing rule is also presented that gives reasonably accurate conductivities for high temperature plasma mixtures.

提出了一种新的密度泛函理论，即基于平均原子的浓离子与离子物种混合的电导率模型，其中不包含可调整的参数。该模型将物种的温度，质量密度和相对丰度作为输入。它考虑了部分电离，离子结构和核价正交性，并使用了截面的量子力学计算。与现有的高保真度但计算量大的方法进行比较显示出良好的一致性。新模型计算效率高，可以达到高温。还提出了一种新的混合规则，该规则为高温等离子体混合物提供了合理准确的电导率。