Oscar Cunningham on Nostr: I have no relevant expertise, but I think it's what you said in your first post: ...

I have no relevant expertise, but I think it's what you said in your first post: 'we're assuming the plasma conducts electricity so well that the electric field is zero.'. The location of the electrons is fully determined by this assumption. So we can just look at the motion of the ions, and let the electrons sort themselves out by moving to cancel any electric field.