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Fig. 6

image

Decoupled diffusion coefficient, ηd, and the Ohmic diffusion coefficient, ηohm, for the dominating thermal electron donors. The Ohmic diffusion coefficients are all much smaller than the decoupled diffusion coefficient. The electron–ion interactions (ηohm) are not significant when compared to the electron–neutral interactions (ηd) upon consideration of thermal ionisation.

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