Any charge seperation leading to an electric field and a potential difference at comets?
Yes, yes but they don’t do anything.....
So, instead of talking crap, how about you tell us what you think they are doing? You know - a model that we can test against observation and evidence?
I'll tell you what this planetary science grad, with sod all interest in, nor understanding of, plasma physics, thinks - the Debye length in the solar wind is ~ 10m. Less, I would imagine, in a cometary coma. Any charge separation is going to be limited in extent, both spatially and temporally. The plasma, by definition, is quasi-neutral, and will react to preserve that quasi-neutrality. There is no way that it cannot. The polarisation (ambipolar) fields that have got you wetting your knickers, are exactly what is expected in a quasi-neutral plasma. It is retarding one charge, and accelerating another, to overcome any small scale charge separation. Happens in all sorts of places, I imagine. Hence the magnetic Reynolds number, and the Debye length. Et boring cetera. What are those values for the solar wind? A cometary coma? The magnetosphere? The solar corona? I doubt anybody associated with EU woo even understands the questions, let alone can provide an answer. And that includes clowns like Scott and Thornhill.
So, when you have found yourself somebody with clue one about plasma physics, get back to us. Hint; not going to happen!
EDIT:
I should say that my interest, such as it is, in plasma physics, only goes back a few years to the time when I first encountered EU wooists at the Rosetta blog. Thanks to people like Tusenfem, and others, as well as the scientific literature, it has not been difficult to see that EUists are clueless on the subject. Why they believe otherwise, is beyond me!