Abstract
A recent paper by Davies et al. [Phys. Plasmas 28, 012305 (2021)] presents rational interpolants for the resistive (α) and thermoelectric (β) transport coefficients as functions of the Hall parameter χ and the ion charge state Z. Here, this discussion is augmented by showing that, at least in the Lorentz limit Z→∞, the proposed rational interpolants for α⊥ and β⊥ can be made even more accurate over a larger range of χ by making slight modifications to ensure the exact asymptotic limits are preserved. Although the authors do not discuss the conductivity (κ) coefficients, this exercise can also be repeated for the rational interpolants of κ⊥ and κ∧ published in a similar work [Phys. Rev. Lett. 126, 075001 (2021)].
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