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Fig. B.4

image

Neutralising gas current and drift current for a model with reduced 26Al abundance (10% of nominal value) and decreased gas density (ρg = 10-8 kg m-3). Both the neutralising gas current and the breakdown value of the electric field are a factor 10 lower than in Fig. B.3, but the drift current is still at least a factor 10 too small to compete with the neutralising current.

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